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History of Roman and Byzantine domes

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Title: History of Roman and Byzantine domes  
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Subject: Byzantine architecture, Hagia Irene, Magister militum, Byzantine Empire, History of early and simple domes
Collection: Ancient Roman Architectural Elements, Byzantine Architecture, Domes
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History of Roman and Byzantine domes

The History of Roman and Byzantine domes traces the architecture of domes throughout the ancient Roman Empire and its medieval continuation, today called the Byzantine Empire. Domes were important architectural elements in both empires and had widespread influence on contemporary and later styles, from Russian and Ottoman architecture to the Italian Renaissance and modern revivals. The domes were customarily hemispherical, although octagonal and segmented shapes are also known, and they developed in form, use, and structure over the centuries. Early examples rested directly on the rotunda walls of round rooms and featured a central oculus for ventilation and light. Pendentives became common in the Byzantine period, provided support for domes over square spaces.

Early wooden domes are known only from a literary source, but the use of wooden formwork, concrete, and unskilled labor enabled domes of monumental size in the late Republic and early Imperial period, such as the so-called "Temple of Mercury" bath hall at Baiae. Nero introduced the dome into Roman palace architecture in the 1st century and such rooms served as state banqueting halls, audience rooms, or throne rooms. The Pantheon's dome, the largest and most famous example, was built of concrete in the 2nd century and may have served as an audience hall for Hadrian. Imperial mausolea, such as the Mausoleum of Diocletian, were domed beginning in the 3rd century. Some smaller domes were built with a technique of using ceramic tubes in place of wooden centering for concrete, or structure embedded in the concrete, but light brick became the preferred building material over the course of the 4th and 5th centuries. Brick ribs allowed for a thinner structure and facilitated the use of windows in the supporting walls, replacing the need for an oculus as a light source.

Christian baptisteries and shrines were domed in the 4th century, such as the Lateran Baptistery and the likely wooden dome over the Church of the Holy Sepulchre. Constantine's octagonal palace church in Antioch may have been the precedent for similar buildings for centuries afterward. The first domed basilica may have been built in the 5th century, with a church in southern Turkey being the earliest proposed example, but the 6th century architecture of Justinian made domed church architecture standard throughout the Roman east. His Hagia Sophia and Church of the Holy Apostles inspired copies in later centuries.

Cruciform churches with domes at their crossings, such as the churches of Hagia Sophia in Thessaloniki and St. Nicholas at Myra, were typical of 7th and 8th century architecture and bracing a dome with barrel vaults on four sides became the standard structural system. Domes over windowed drums of cylindrical or polygonal shape were standard after the 9th century. In the empire's later period, smaller churches were built with smaller domes, normally less than 6 meters (20 ft) after the 10th century. Exceptions include the 11th century domed-octagons of Hosios Loukas and Nea Moni, and the 12th century Chora Church, among others. The cross-in-square plan, with a single dome at the crossing or five domes in a quincunx pattern, as at the Church of St. Panteleimon, was the most popular type from the 10th century until the fall of Constantinople in 1453.


  • Overview 1
  • Late Republic and early Imperial period 2
  • First century 3
  • Second century 4
  • Third century 5
  • Fourth century 6
  • Fifth century 7
  • Sixth century 8
  • Seventh and eighth centuries 9
  • Ninth to twelfth centuries 10
  • Thirteenth to fifteenth centuries 11
  • Influence 12
  • See also 13
  • References 14
  • Bibliography 15


Rounded arches, vaults, and domes distinguish Roman architecture from that of Ancient Greece and were facilitated by the use of concrete and brick.[1] By varying the weight of the aggregate material in the concrete, the weight of the concrete could be altered, allowing lighter layers to be laid at the top of concrete domes. But concrete domes also required expensive wooden formwork, also called shuttering, to be built and kept in place during the curing process, which would usually have to be destroyed to be removed. Formwork for brick domes need not be kept in place as long and could be more easily reused.[2]

Roman domes were used in baths, villas, palaces, and tombs. Oculi were common features.[3] They were customarily hemispherical in shape and partially or totally concealed on the exterior. In order to buttress the horizontal thrusts of a large hemispherical masonry dome, the supporting walls were built up beyond the base to at least the haunches of the dome and the dome was then also sometimes covered with a conical or polygonal roof.[4] A variety of other shapes, including shallow saucer domes, segmental domes, and ribbed domes were also sometimes used.[5] The audience halls of many imperial palaces were domed.[6] Domes were also very common over polygonal garden pavilions.[7] Construction and development of domes declined in the west with the decline and fall of the western portion of the empire.[8]

The term "Byzantine", invented in 1557 by historian Hieronymus Wolf, became popular in the 19th century and is used to refer to the medieval eastern Roman Empire with its capital at Constantinople, the former town of Byzantion.[9] In the Byzantine period, a supporting structure of four arches with pendentives between them allowed the spaces below domes to be opened up. Pendentives allowed for weight loads to be concentrated at just four points on a more practical square plan, rather than a circle.[10] Domes were important elements of baptisteries, churches, and tombs.[11] They were normally hemispherical and had, with occasional exceptions, windowed drums. Roofing for domes ranged from simple ceramic tile to more expensive, more durable, and more form-fitting lead sheeting.[12]

The domes and drums typically incorporated wooden tension rings at several levels within the structures to resist deformation in the mortar and allow for faster construction. Metal clamps between stone cornice blocks, metal tie rods, and metal chains were also used to stabilize domed buildings.[13] Timber belts at the bases of domes helped to stabilize the walls below them during earthquakes, but the domes themselves remained vulnerable to collapse.[14] The surviving ribbed or pumpkin dome examples in Constantinople are structurally equivalent and those techniques were used interchangeably, with the number of divisions corresponding to the number of windows. Aided by the small scale of churches after the 6th century, such ribbed domes could be built with formwork only for the ribs. Pumpkin domes could have been built in self-supporting rings and small domical vaults were effectively corbelled, dispensing with formwork altogether.[15]

Close interior photo of the Pantheon's circular oculus opening at the center of the domed ceiling
The circular oculus of the Pantheon, at the center of the domed ceiling
Exterior of the dome of Santa Costanza showing the windows in a cylindrical drum that hides the shape of the dome from view
The dome of Santa Costanza is concealed externally by the buttressing of its cylindrical drum
Exterior of a dome at Zeyrek Mosque showing exposed external dome profile and buttressed windows in a drum
A dome of the former Pantokrator Monastery, showing an exposed external profile and lead roofing
Dome of the Parecclesion interior at Chora Church showing ribs, frescos, and a drum with windows
A dome at Chora Church, with ribs from between the drum windows converging on a circular fresco image

Late Republic and early Imperial period

Roman baths played a leading role in the development of domed construction in general, and monumental domes in particular. Modest domes in baths dating from the 2nd and 1st centuries BC are seen in Pompeii, in the cold rooms of the Terme Stabiane and the Terme del Foro.[16][17] These domes are very conical in shape, similar to those on an Assyrian bas-relief found in Nineveh.[18][19] At a Roman era tepidarium in Cabrera de Mar, Spain, a dome has been identified from the middle of the 2nd century BC that used a refined version of the parallel arch construction found in the earlier Hellenistic bath dome in Sicily.[20] According to Vitruvius, the temperature and humidity of domed warm rooms could be regulated by raising or lowering bronze discs located under an oculus.[21] Domes were particularly well suited to the hot rooms of baths circular in plan to facilitate even heating from the walls. However, the extensive use of domes did not occur before the 1st century AD.[22]

Varro's book on agriculture describes an aviary with a wooden dome decorated with the eight winds that is compared by analogy to the eight winds depicted on the Tower of the Winds, which was built in Athens at about the same time. This aviary with its wooden dome may represent a fully developed type. Wooden domes in general would have allowed for very wide spans. Their earlier use may have inspired the development and introduction of large stone domes of previously unprecedented size.[16] Complex wooden forms were necessary for dome centering and support during construction, and they seem to have eventually become more efficient and standardized over time.[23]

Bare concrete dome interior today called the Temple of Mercury with two square windows half-way up the dome on the far side, a circular oculus at the top, and a water level that reaches up to the base of the dome
Flooded ruins of the so-called "Temple of Mercury" in Baiae

The mortar and aggregate of Roman concrete was built up in horizontal layers laid by hand against wooden form-work with the thickness of the layers determined by the length of the workday, rather than being poured into a mold as concrete is today. Roman concrete domes were thus built similarly to the earlier corbel domes of the Mediterranean region, although they have different structural characteristics.[24] The aggregate used by the Romans was often rubble, but lightweight aggregate in the upper levels served to reduce stresses.[25] Empty "vases and jugs" could be hidden inside to reduce weight.[26] The dry concrete mixtures used by the Romans were compacted with rams to eliminate voids, and added animal blood acted as a water reducer.[27] Because Roman concrete was weak in tension, it did not provide any structural advantage over the use of brick or stone. But, because it could be constructed with unskilled slave labor, it provided a constructional advantage and facilitated the building of large-scale domes.[28]

Domes reached monumental size in the Roman Imperial period.[16] Although imprints of the formwork itself have not survived, deformations from the ideal of up to 22 centimeters (8.7 in) at the so-called "Temple of Mercury" in Baiae suggest a centering of eight radiating frames, with horizontal connectors supporting radial formwork for the shallow dome.[29] The building, actually a concrete bath hall dating from the age of Augustus (27 BC – 14 AD), has the first known large Roman dome. There are five openings in the dome: a circular oculus and four square skylights.[16] The dome has a span of 21.5 meters (71 ft) and is the largest known dome built before that of the Pantheon.[30] It is also the earliest preserved concrete dome.[23]

First century

While there are earlier examples in the Republican period and early Imperial period, the growth of domed construction increased under Emperor Nero and the Flavians in the 1st century AD, and during the 2nd century. Centrally-planned halls become increasingly important parts of palace and palace villa layouts beginning in the 1st century, serving as state banqueting halls, audience rooms, or throne rooms.[31] Formwork was arranged either horizontally or radially, but there is not enough surviving evidence from the 1st and 2nd centuries to say what was typical.[23]

Bare concrete octagonal dome interior at Nero's palace showing flat sections springing from above square doorways and merging into a spherical shape that culminates in a large circular oculus at the top
The octagonal domed hall found in Nero's Domus Aurea

The opulent palace architecture of the Emperor Nero (54 – 68 AD) marks an important development.[32] There is evidence of a dome in his Domus Transitoria at the intersection of two corridors, resting on four large piers, which may have had an oculus at the center. In Nero's Domus Aurea, or "Golden House", planned by Severus and Celer, the walls of a large octagonal room transition to an octagonal domical vault, which then transitions to a dome with an oculus.[33][34] This is the earliest known example of a dome in the city of Rome itself.[29]

The Domus Aurea was built after 64 AD and the dome was over 13 meters (43 ft) in diameter.[35] This octagonal and semicircular dome is made of concrete and the oculus is made of brick. The radial walls of the surrounding rooms buttress the dome, allowing the octagonal walls directly beneath it to contain large openings under flat arches and for the room itself to be unusually well-lit.[36] Because there is no indication that mosaic or other facing material had ever been applied to the surface of the dome, it may have been hidden behind a tent-like fabric canopy like the pavilion tents of Hellenistic (and earlier Persian) rulers. The oculus is unusually large, more than two-fifths the span of the room, and it may have served to support a lightweight lantern structure or tholos which would have covered the opening. Circular channels on the upper surface of the oculus also support the idea that this lantern, perhaps itself domed, was the rotating dome referred to in written accounts.[37]

According to Suetonius, the Domus Aurea had a dome that perpetually rotated on its base in imitation of the sky.[38] It was reported in 2009 that newly discovered foundations of a round room may be those of a rotating domed dining hall.[39] Also reported in contemporary sources is a ceiling over a dining hall in the palace fitted with pipes so that perfume could rain from the ceiling, although it is not known whether this was a feature of the same dome.[40] The expensive and lavish decoration of the palace caused such scandal that it was abandoned soon after Nero's death and public buildings such as the Baths of Titus and the Colosseum were built at the site.[41]

The only intact dome from the reign of Emperor Domitian is a 16.1-meter (53 ft) wide example in what may have been a nymphaeum at his villa at Albano. It is now the church of Santa Maria della Rotunda.[35] Domitian's 92 AD Domus Augustana established the apsidal semi-dome as an imperial motif.[6] Square chambers in his palace on the Palatine Hill used pendentives to support domes.[42] His palace contained three domes resting over walls with alternating apses and rectangular openings.[43] An octagonal domed hall existed in the domestic wing.[44] The dining hall of this private palace, called the Coenatio Jovis, or Dining Hall of Jupiter, contained a rotating ceiling like the one Nero had built, but with stars set into the simulated sky.[45]

Second century

During the reign of Emperor Trajan, domes and semi-domes over exedras were standard elements of Roman architecture, possibly due to the efforts of Trajan's architect, Apollodorus of Damascus, who was famed for his engineering ability.[46][47] Two rotundas 20 meters (66 ft) in diameter were finished in 109 AD as part of the Baths of Trajan, built over the Domus Aurea, and exedras 13 and 18 meters (43 and 59 ft) wide were built as part of the markets north-east of his forum. The architecture of Trajan's successor, Hadrian, continued this style.[46] Although considered an example of Hadrianic architecture, there is brickstamp evidence that the rebuilding of the Pantheon in its present form was begun under Trajan.[41] Speculation that the architect of the Pantheon was Apollodorus has not been proven, although there are stylistic commonalities between his large coffered half-domes at Trajan's Baths and the dome of the Pantheon. Three 100-foot (30 m) wide exedras at Trajan's Baths have patterns of coffering that, as in the Pantheon, align with lower niches only on the axes and diagonals and, also as in the Pantheon, that alignment is sometimes with the ribs between the coffers, rather than with the coffers themselves.[47]

Vertical panorama image of the interior of the Pantheon in Rome from the floor to the ceiling showing also the main apse and the restored section of the attic level
The Pantheon in Rome

The Pantheon, a temple in Rome completed by Emperor Hadrian as part of the Baths of Agrippa, is the most famous, best preserved, and largest Roman dome.[48] Its diameter was more than twice as wide as any known earlier dome.[49] Dating from the 2nd century, it is an unreinforced concrete dome 43.4 meters (142 ft) wide resting on a circular wall, or rotunda, 6 meters (20 ft) thick. This rotunda, made of brick-faced concrete, contains a large number of relieving arches and is not solid. Seven interior niches and the entrance way divide the wall structurally into eight virtually independent piers. These openings and additional voids account for a quarter of the rotunda wall's volume. The only opening in the dome is the brick-lined oculus at the top, 9 meters (30 ft) in diameter, that provides light and ventilation for the interior.[50]

The shallow coffering in the dome accounts for a less than five percent reduction in the dome's mass, and is mostly decorative. The aggregate material hand-placed in the concrete is heaviest at the base of the dome and changes to lighter materials as the height increases, dramatically reducing the stresses in the finished structure. In fact, many commentators cite the Pantheon as an example of the revolutionary possibilities for monolithic architecture provided by the use of Roman pozzolana concrete. However, vertical cracks seem to have developed very early, such that in practice the dome acts as an array of arches with a common keystone, rather than as a single unit. The exterior step-rings used to compress the "haunches" of the dome, which would not be necessary if the dome acted as a monolithic structure, may be an acknowledgement of this by the builders themselves. Such buttressing was common in Roman arch construction.[50] The cracks in the dome can be seen from the upper internal chambers of the rotunda, but have been covered by re-rendering on the inner surface and by patching on the outside.[51] The Pantheon's roof was originally covered with gilt bronze tiles, but these were removed in 663 by Emperor Constans II and replaced by lead roofing.[19][52]

The function of the Pantheon remains an open question. Strangely for a temple, its inscription, which attributes this third building at the site to the builder of the first, Marcus Agrippa, does not mention any god or group of gods. Its name, Pantheon, comes from the Greek for "all gods" but is unofficial, and it was not included in the list of temples restored by Hadrian in the Historia Augusta. Circular temples were small and rare, and Roman temples traditionally allowed for only one divinity per room. The Pantheon more resembles structures found in imperial palaces and baths. Hadrian is believed to have held court in the rotunda using the main apse opposite the entrance as a tribune, which may explain its very large size.[53] Later Roman buildings similar to the Pantheon include a temple to Asklepios Soter (c. 145) in the old Hellenistic city of Pergamon and the so-called "Round Temple" at Ostia (c. 230–240), which may have been related to the Imperial cult. The Pergamon dome was about 80 Roman feet wide, versus about 150 for the Pantheon, and made of brick over a cut stone rotunda. The Ostia dome was 60 Roman feet wide and made of brick-faced concrete.[54][55] No later dome built in the Imperial era came close to the span of the Pantheon.[56] It remained the largest dome in the world for more than a millennium and is still the world's largest unreinforced concrete dome.[57]

Half-missing building at Hadrian's Villa showing domed interior composed of orange peal-like sections rising from arched niches and door
Ruins in the Piazza D'Oro at Hadrian's Villa

Segmented domes, made of radially concave wedges or of alternating concave and flat wedges, appear under Hadrian in the 2nd century and most preserved examples of the style date from this period. Hadrian's Villa has examples at the Piazza D'Oro and in the semidome of the Serapeum. Recorded details of the decoration of the segmented dome at the Piazza D'Oro suggests it was made to evoke a billowing tent, perhaps in imitation of the canopies used by Hellenistic kings. Other examples exist at the Hadrianic baths of Otricoli and the so-called "Temple of Venus" at Baiae. This style of dome required complex centering and radially-oriented formwork to create its tight curves, and the earliest surviving direct evidence of radial formwork is found at the caldarium of the Large Baths at Hadrian's villa.[58] Hadrian was an amateur architect and it was apparently domes of Hadrian's like these that Trajan's architect, Apollodorus of Damascus, derisively called "pumpkins" prior to Hadrian becoming emperor. According to Dio Cassius, the memory of this insult contributed to Hadrian as emperor having Apollodorus exiled and killed.[59]

In the middle of the 2nd century, some of the largest domes were built near present-day Naples, as part of large bath complexes taking advantage of the volcanic hot springs in the area. At the bath complex at Baiae, there are remains of a collapsed dome spanning 26.3 meters (86 ft), called the "Temple of Venus", and a larger half-collapsed dome spanning 29.5 meters (97 ft) called the "Temple of Diana". The dome of the "Temple of Diana", which may have been a nymphaeum as part of the bath complex, can be seen to have had an ogival section made of horizontal layers of mortared brick and capped with light tufa. It dates to the second half of the 2nd century and is the third largest dome known from the Roman world. The second largest is the collapsed "Temple of Apollo" built nearby along the shore of Lake Avernus. The span cannot be precisely measured due to its ruined state, but it was more than 36 meters (118 ft) in diameter.[60]

In the second half of the 2nd century in North Africa, a distinctive type of nozzle tube shape was developed in the tradition of the terracotta tube dome at the Hellenistic era baths of Morgantina, an idea that had been preserved in the use of interlocking terracotta pots for kiln roofs. This tube could be mass-produced on potter's wheels and interlocked to form a permanent centering for concrete domes, avoiding the use of wooden centering altogether. This spread mainly in the western Mediterranean.[61] Although rarely used, the pendentive dome was known in 2nd century Roman architecture, such as the funerary monuments of the Sedia dei Diavolo and the Torracio della Secchina on the Via Nomentana. It would be used much more widely in the Byzantine period.[62]

Third century

Ruined cylindrical brick building exterior with a large section missing showing the hemispherical domed interior with what had been four round windows in the sides of the dome and no oculus at the top
Ruins at Villa Gordiani

In the 3rd century, imperial mausolea began to be built as domed rotundas rather than tumulus structures or other types, following similar monuments by private citizens. Pagan and Christian domed mausolea from this time can be differentiated in that the structures of the buildings also reflect their religious functions. The pagan buildings are typically two story, dimly lit, free-standing structures with a lower crypt area for the remains and an upper area for devotional sacrifice. Christian domed mausolea contain a single well-lit space and are usually attached to a church.[63]

Examples from the 3rd century include the brick dome of the Mausoleum of Diocletian, and the mausoleum at Villa Gordiani.[64] The Mausoleum of Diocletian uses small arched squinches of brick built up from a circular base in an overlapping scales pattern, called a "stepped squinches dome". The scales pattern was a popular Hellenistic motif adopted by the Parthians and Sasanians, and such domes are likely related to Persian "squinch vaults".[65] Masonry domes were less common in the Roman provinces, although the 3rd century "Temple of Venus" at Baalbek was built with a stone dome 10 meters (33 ft) in diameter.[7] The 24-meter (79 ft) dome of the Mausoleum of Galerius was built around 300 AD close to the imperial palace as either a mausoleum or a throne room. It was converted into a church in the 5th century.[66] The large rotunda of the Baths of Agrippa, the oldest public baths in Rome, has been dated to the Severan period at the beginning of the 3rd century, but it is not known whether this is an addition or simply a reconstruction of an earlier domed rotunda.[67]

The technique of building lightweight domes with interlocking hollow ceramic tubes further developed in North Africa and Italy in the late 3rd and early 4th centuries.[68] By the 4th century, the thin and lightweight tubed vaulting had become a vaulting technique in its own right, rather than simply serving as a permanent centering for concrete. It was used in early Christian buildings in Italy.[69] Arranging these terracotta tubes in a continuous spiral created a dome that was not strong enough for very large spans, but required only minimal centering and formwork.[70] The later dome of the Baptistry of Neon in Ravenna is an example.[68]

Fourth century

Exterior of a ten-sided ruin called today the Temple of Minerva Medica at the intersection of city streets in Rome showing large arched windows in the drum between engaged buttresses and below polygonal step-rings buttresses for the collapsed dome
The so-called "Temple of Minerva Medica" in Rome

In the 4th century, Roman domes proliferated due to changes in the way domes were constructed, including advances in centering techniques and the use of brick ribbing. The so-called "Temple of Minerva Medica", for example, used brick ribs along with step-rings and lightweight pumice aggregate concrete to form a decagonal dome.[71] The material of choice in construction gradually transitioned during the 4th and 5th centuries from stone or concrete to lighter brick in thin shells.[72] The use of ribs stiffened the structure, allowing domes to be thinner with less massive supporting walls. Windows were often used in these walls and replaced the oculus as a source of light, although buttressing was sometimes necessary to compensate for large openings. The Mausoleum of Santa Costanza has windows beneath the dome and nothing but paired columns beneath that, using a surrounding barrel vault to buttress the structure.[73]

The octagonal "Domus Aurea", or "Golden Octagon", built by Emperor Constantine in 327 at the imperial palace of Antioch likewise had a domical roof, presumably of wood and covered with gilded lead.[74][75] It was dedicated two years after the Council of Nicea to "Harmony, the divine power that unites Universe, Church, and Empire". It may have been both the cathedral of Antioch as well as the court church of Constantine, and the precedent for the later octagonal plan churches near palaces of Saints Sergius and Bacchus and Hagia Sophia by Justinian and Aachen Cathedral by Charlemagne.[76] The dome was rebuilt by 537–8 with cypress wood from Daphne after being destroyed in a fire. Most domes on churches in the Syrian region were built of wood, like that of the later Dome of the Rock in Jerusalem, and the dome of the Domus Aurea survived a series of earthquakes in the 6th century that destroyed the rest of the building. There is no record of the church being rebuilt after the earthquake of 588, perhaps due to the general abandonment of many public buildings in what was no longer a capitol of the Empire.[77]

Centralized buildings of circular or octagonal plan also became used for baptistries and reliquaries due to the suitability of those shapes for assembly around a single object.[78] Baptisteries began to be built in the manner of domed mausolea during the 4th century in Italy. The octagonal Lateran Baptistery or the baptistery of the Holy Sepulchre may have been the first, and the style spread during the 5th century.[79] The Church of the Holy Apostles, or Apostoleion, probably planned by Constantine but built by his successor Constantius in the new capital city of Constantinople, combined the congregational basilica with the centralized shrine. With a similar plan to that of the Church of Saint Simeon Stylites, four naves projected from a central rotunda containing Constantine's tomb and spaces for the tombs of the twelve Apostles.[80] Above the center may have been a clerestory with a wooden dome roofed with bronze sheeting and gold accents.[81]

Christian mausolea and shrines developed into the "centralized church" type, often with a dome over a raised central space.[78] The oblong decagon of today's St. Gereon's Basilica in Cologne, Germany, was built upon an extraordinary and richly decorated 4th century Roman building with an apse, semi-domed niches, and dome. A church built in the city's northern cemetery, its original dedication is unknown.[82] It may have been built by Julianus, the governor of Gaul from 355 to 360 who would later become emperor, as a mausoleum for his family.[83] The oval space may have been patterned after imperial audience halls or buildings such as the Temple of Minerva Medica.[84] The Church of the Holy Sepulchre in Jerusalem was likely built with a wooden dome over the shrine by the end of the 4th century.[85] The rotunda, 33.7 meters (111 ft) in diameter and centered on the tomb of Christ, consisted of a domed center room surrounded by an ambulatory. The dome rose over a ground floor, gallery, and clerestory and may have had an oculus.[86] The dome was about 21 meters (69 ft) wide.[87] Razed to the ground in 1009 by the Fatimid Caliph, it was rebuilt in 1048 by Emperor Constantine IX Monomachos, reportedly with a mosaic depicting Christ and the Twelve Apostles. The current dome is a 1977 renovation in thin reinforced concrete.[88]

The largest centrally planned Early Christian church, Milan's domed San Lorenzo Maggiore, was built in the middle of the 4th century while that city served as the capital of the Western Empire.[89] There are two theories about the shape of this dome: a Byzantine-style dome on spherical pendentives with a ring of windows similar to domes of the later Justinian era, or an octagonal cloister vault following Roman trends and like the vaulting over the site's contemporary chapel of Saint Aquiline, possibly built with vaulting tubes, pieces of which had been found in excavations. Although these tubes have been shown to date from a medieval reconstruction, there is evidence supporting the use of Roman concrete in the original dome.[90] The original vaulting was concealed by a square drum externally rather than the octagon of today, which dates from the 16th century.[91]

Fifth century

By the 5th century, structures with small-scale domed cross plans existed across the Christian world. Examples include the Mausoleum of Galla Placidia, the martyrium attached to the Basilica of San Simpliciano, and churches in Macedonia and on the coast of Asia Minor.[92] Small brick domes are also found in towers of Constantinople's early 5th century land walls.[93] Underground cisterns in Constantinople, such as the Cistern of Philoxenos and the Basilica Cistern, were composed of a grid of columns supporting small domes, rather than groin vaults.[94] The square bay with an overhead sail vault or dome on pendentives became the basic unit of architecture in the early Byzantine centuries, found in a variety of combinations.[92]

With the end of the Western Roman Empire, domes became a signature feature of the church architecture of the surviving Eastern Roman Empire.[94][95] Early examples of Byzantine domes existed over the hexagonal hall of the Palace of Antiochos, the hexagon at Gülhane, the martyium of Sts. Karpos and Papylos, and the rotunda at the Myrelaion.[93] The 5th century St. Mary's church in Ephesus had small rectangular side rooms with sail vaults made of arched brick courses. The brick dome of the baptistery at St. Mary's was composed of a series of tightly arched meridional sections.[96] The Church of Saint Simeon Stylites likely had a wooden polygonal dome over its central 27-meter (89 ft) wide octagon.[97]

A transition from timber-roofed basilicas to vaulted churches seems to have occurred between the late 5th century and the 7th century, with early examples in Constantinople, Asia Minor, and Cilicia.[98] The first known domed basilica may have been a church at Meriamlik in southern Turkey, dated to between 471 and 494, although the ruins do not provide a definitive answer. It is possible earlier examples existed in Constantinople, where it has been suggested that the plan for the Meriamlik church itself was designed, but no domed basilica has been found there before the 6th century.[99]

Sixth century

The 6th century marks a turning point for domed church architecture. Centrally planned domed churches had been built since the 4th century for very particular functions, such as palace churches or martyria, with a slight widening of use around 500 AD, but most church buildings were timber-roofed halls on the basilica plan. The Church of St. Polyeuctus in Constantinople (524–527) was apparently built as a large and lavish domed basilica similar to the Meriamlik church of fifty years before—and to the later Hagia Irene of Emperor Justinian—by Anicia Juliana, a descendent of the former imperial house.[100] There is a story that she used the contribution to public funds that she had promised Justinian on his ascension to the throne to roof her church in gold.[101] The church included an inscription praising Juliana for having "surpassed Solomon" with the building, and it may have been with this in mind that Justinian would later say of his Hagia Sophia, "Solomon, I have vanquished thee!".[102][103]

In the second third of the 6th century, church building by the Emperor Justinian used the domed cross unit on a monumental scale, in keeping with Justinian's emphasis on bold architectural innovation. His church architecture emphasized the central dome and his architects made the domed brick-vaulted central plan standard throughout the Roman east. This divergence with the Roman west from the second third of the 6th century may be considered the beginning of a "Byzantine" architecture.[104] Timber-roofed basilicas, which had previously been the standard church form, would continue to be so in the medieval west.[105]

The earliest existing of Justinian's domed buildings is the central plan Church of Saints Sergius and Bacchus in Constantinople, completed by 536. It is called the "Little Hagia Sophia" mosque today, but was actually begun five years earlier than that building. The dome rests on an octagonal base created by eight arches on piers and is divided into sixteen sections. Those sections above the flat sides of the octagon are flat and contain a window at their base, alternating with sections from the corners of the octagon that are scalloped, creating an unusual kind of pumpkin dome.[106] The building was built within the precinct of the Palace of Hormistas, the residence of Justinian before his ascension to the throne in 527, and includes an inscription mentioning the "sceptered Justinian" and "God-crowned Theodora".[107]

Vertical interior image of the long vaulted ceiling of the nave of Hagia Sophia showing the central ribbed dome with a ring of windows at its base, four pendentives between the four large arches supporting that main dome, two large semi-domes filling the near and far arches (with the other two arches being filled by flat walls with windows, and smaller niche semi-domes in the far large semi-dome
The Hagia Sophia in Istanbul

After the Nika Revolt destroyed much of the city of Constantinople in 532, including the churches of Hagia Sophia ("Holy Wisdom") and Hagia Irene ("Holy Peace"), Justinian had the opportunity to rebuild. Both had been basilica plan churches and both were rebuilt as domed basilicas, although the Hagia Sophia was rebuilt on a much grander scale.[108] Built by Anthemius of Tralles and Isidore of Miletus in Constantinople between 532 and 537, the Hagia Sophia has been called the greatest building in the world. It is an original and innovative design with no known precedents in the way it covers a basilica plan with dome and semi-domes. Periodic earthquakes in the region have caused three partial collapses of the dome and necessitated repairs. The precise shape of the original central dome completed in 537 was significantly different from the current one and, according to contemporary accounts, much bolder.[109]

Procopius wrote that the original dome seemed "not to rest upon solid masonry, but to cover the space with its golden dome suspended from heaven." Byzantine chronicler John Malalas reported that this dome was 20 byzantine feet lower than its replacement.[110] One theory is that the original dome continued the curve of the existing pendentives (which were partially reconstructed after its collapse), creating a massive sail vault pierced with a ring of windows.[111][112] This vault would have been part of a theoretical sphere 46 meters (151 ft) in diameter (the distance from the base of one pendentive to the base of the one opposite), 7 percent greater than the span of the Pantheon's dome.[113][114] Another theory raises the shallow cap of this dome (the portion above what are today the pendentives) on a relatively short recessed drum containing the windows.[115] This first dome partially collapsed due to an earthquake in 558 and the design was then revised to the present profile. Earthquakes also caused partial collapses of the dome in 989 and 1346, so that the present dome consists of portions dating from the 6th century, on the north and south sides, and portions from the 10th and 14th centuries on the west and east sides, respectively. There are irregularities where these sectors meet.[116]

The current central dome, above the pendentives, is about 750 millimeters (30 in) thick.[117] It is about 32 meters (105 ft) wide and contains 40 radial ribs that spring from between the 40 windows at its base. Four of the windows were blocked as part of repairs in the 10th century.[118] The ring of windows at the base of the central dome are in the portion where the greatest hoop tension would have been expected and so they may have been used to help alleviate cracking along the meridians.[119] Iron cramps between the marble blocks of its cornice helped to reduce outward thrusts at the base and limit cracking, like the wooden tension rings used in other Byzantine brick domes.[64] The dome and pendentives are supported by four large arches springing from four piers. Additionally, two huge semi-domes of similar proportion are placed on opposite sides of the central dome and themselves contain smaller semi-domes between an additional four piers.[120] The Hagia Sophia, as both the cathedral of Constantinople and the church of the adjacent Great Palace of Constantinople, has a form of octagonal plan.[121]

Interior of the octagonal room of the Basilica of San Vitale in Ravenna showing the hemispherical dome, windows in the drum beneath it, and several of the eight tall arches niches with small semi-domes aligned with those windows
The Basilica of San Vitale in Ravenna

The city of Ravenna, Italy, had served as the capital of the Western Roman Empire after Milan from 402 and the capital of the subsequent kingdoms of Odoacer and of Theodoric until Justinian's reconquest in 540. The octagonal Basilica of San Vitale in Ravenna, begun under Theodoric in 525, was completed under the Byzantines in 547 and contains a terracotta dome.[122] It may belong to a school of architecture from 4th and 5th century Milan.[123] The building is similar to the Byzantine Church of Saints Sergius and Bacchus and the later Chrysotriklinos, or throne hall and palace church of Constantinople, and it would be used as the model for Charlemagne's palace chapel at Aix-la-Chapelle.[124] Hollow amphorae were fitted inside one another to provide a lightweight structure for the dome and avoid additional buttressing.[125] It is 18 meters (59 ft) in diameter.[7] The amphorae were arranged in a continuous spiral, which required minimal centering and formwork but was not strong enough for large spans.[70] The dome was covered with a timber roof, which would be the favored practice for later medieval architects in Italy although it was unusual at the time.[125]

Justinian also tore down the aging Church of the Holy Apostles and rebuilt it on a grander scale between 536 and 550.[126] The original building was a cruciform basilica with a central domed mausoleum. Justinian's replacement was apparently likewise cruciform but with a central dome and four flanking domes. The central dome over the crossing had pendentives and windows in its base, while the four domes over the arms of the cross had pendentives but no windows.[127] The domes appear to have been radically altered between 944 and 985 by the addition of windowed drums beneath all five domes and by raising the central dome higher than the others.[128] The second most important church in the city after the Hagia Sophia, it fell into disrepair after the Latin occupation of Constantinople between 1204 and 1261 and it was razed to the ground by Mehmed the Conqueror in 1461 to build his Fatih Mosque on the site.[129] Justinian's Basilica of St. John at Ephesus and Venice's St Mark's Basilica are derivative of Holy Apostles.[127] More loosely, the Cathedral of St. Front and the Basilica of Saint Anthony of Padua are also derived from this church.[130]

Justinian and his successors modernized frontier fortifications throughout the century. The example at Qasr ibn Wardan (564) in the desert of eastern Syria is particularly impressive, containing a governor's palace, barracks, and a church built with techniques and to plans possibly imported from Constantinople.[131] The church dome is unusual in that the pendentives sprang from an octagonal drum, rather than the four main arches, and in that it was made of brick, which was rare in Syria.[93]

The Golden Triclinium, or Chrysotriklinos, of the Great Palace of Constantinople served as an audience hall for the Emperor as well as a palace chapel. Nothing of it has survived except descriptions, which indicate that it had a pumpkin dome containing sixteen windows in its webs and that the dome was supported by the arches of eight niches connecting to adjoining rooms in the building's likely circular plan.[132] Alternatively, the building may have been octagonal in plan, rather than circular.[133] The dome seems to have had webs that alternated straight and concave, like those of the dome of Justinian's Church of Saints Sergius and Bacchus, and may have been built about 40 years after that church.[134] It was begun under Emperor Justin II, completed by his successor Tiberius II, and continued to be improved by subsequent rulers. It was connected to the imperial living quarters and was a space used for assembly before religious festivals, high promotions and consultations, as a banqueting hall, a chapel for the emperor, and a throne room. Never fully described in any of its frequent mentions in Byzantine texts, the room was restricted to members of the court and the "most highly rated foreigners". In the 10th century, the throne in the east niche chamber was directly below an icon of an enthroned Christ.[135]

Seventh and eighth centuries

The period of Iconoclasm, roughly corresponding to the 7th to 9th centuries, is poorly documented but can be considered a transitional period.[136] The cathedral of Sofia has an unsettled date of construction, ranging from the last years of Justinian to the middle of the 7th century, as the Balkans were lost to the Slavs and Bulgars. It combines a barrel-vaulted cruciform basilica plan with a crossing dome hidden externally by the drum. It resembles some Romanesque churches of later centuries, although the type would not be popular in later Byzantine architecture.[137] Part of the 5th century basilica of St. Mary at Ephesus seems to have been rebuilt in the 8th century as a cross-domed church, a development typical of the 7th to 8th centuries and similar to the cross-domed examples of Hagia Sophia in Thessaloniki, St. Nicholas at Myra, St. Clement's at Ankara, and the church of the Koimesis at Nicaea.[138]

Bare interior of the former church of Hagia Irene in Istanbul showing the convergence of four short barrel vaults at the pendentives, windowed drum, and main dome
The Hagia Irene in Istanbul

With the decline in the empire's resources following losses in population and territory, domes in Byzantine architecture were used as part of more modest new buildings. The large-scale churches of Byzantium were, however, kept in good repair. The upper portion of the Church of Hagia Irene was thoroughly rebuilt after an earthquake in 740. The nave was re-covered with an elliptical domical vault hidden externally by a low cylinder on the roof, in place of the earlier barrel vaulted ceiling, and the original central dome from the Justinian era was replaced with one raised upon a high windowed drum. The barrel vaults supporting these two new domes were also extended out over the side aisles, creating cross-domed units.[126] By bracing the dome with broad arches on all four sides, the cross-domed unit provided a more secure structural system.[136] These units, with most domes raised on drums, became a standard element on a smaller scale in later Byzantine church architecture and all domes built after the transitional period were braced with bilateral symmetry.[139]

A small, unisex monastic community in Bithynia, near Constantinople, may have developed the cross-in-square plan church during the Iconoclastic period, which would explain the plan's small scale and unified naos. The ruined church of St. John at Pelekete monastery is an early example.[140] Monks had supported the use of icons, unlike the government-appointed secular clergy, and monasticism would become increasingly popular. A new type of privately-funded urban monastery developed from the 9th century on, which may help to explain the small size of subsequent building.[141]

Ninth to twelfth centuries

Exterior side view of the relatively small Church of St. Panteleimon showing the central windowed drum and dome as well as two of the four smaller windowed drums and domes built at the corners of the square plan
The Church of St. Panteleimon in Nerezi, Macedonia

Timber-roofed basilicas, which had been the standard form until the 6th century, would be displaced by domed churches from the 9th century on.[105] In the Middle Byzantine period (c. 843–1204), domes were normally built to emphasize separate functional spaces, rather than as the modular ceiling units they had been earlier.[142][136] Resting domes on circular or polygonal drums pierced with windows eventually became the standard style, with regional characteristics.[143]

The cross-in-square plan, with a single dome at the crossing or five domes in a quincunx pattern, became widely popular in the Middle Byzantine period.[144] Examples include an early 9th century church in Tirilye, now called the Fatih Mosque, and the palace chapel of the Myrelaion, built around 920.[145] The Nea Ekklesia of Emperor Basil I was built in Constantinople around 880 as part of a substantial building renovation and construction program during his reign. It had five domes, which are known from literary sources, but different arrangements for them have been proposed under at least four different plans. One has the domes arranged in a cruciform pattern like those of the contemporaneous Church of St. Andrew at Peristerai or the much older Church of the Holy Apostles in Constantinople. Others arrange them in a quincunx pattern, with four minor domes in the corners of a square and a larger fifth in the center, as part of a cross-domed or cross-in-square plan.[146] It is often suggested that the five-domed design of St. Panteleimon at Nerezi, from 1164, is based on that of the Nea Ekklesia.[147]

The cross-in-square is the most common church plan from the 10th century until the fall of Constantinople in 1453.[148] This type of plan, with four columns supporting the dome at the crossing, was best suited for domes less than 7 meters (23 ft) wide and, from the 10th to the 14th centuries, a typical Byzantine dome measured less than 6 meters (20 ft) in diameter. For domes beyond that width, variations in the plan were required such as using piers in place of the columns and incorporating further buttressing around the core of the building.[149] The distinctive rippling eaves design for the roofs of domes begins in the 10th century. In mainland Greece, circular or octagonal drums became the most common while, in Constantinople, drums with twelve or fourteen sides were popular beginning in the 11th century.[143] The 11th century rock-cut churches of Cappadocia, such as Karanlik Kilise and Elmali Kilise in Göreme, have shallow domes without drums due to the dim natural lighting of cave interiors.[150]

Interior of the central naos of the monastery of Hosias Loukas, showing the large dome and fresco of Christ Pantokrator with a ring of windows in the base of the dome and pendentives formed by the eight supporting arches, four of which contain squinches that rest on the four corners of the square walls of the space
The monastery of Hosios Loukas

The domed-octagon plan is a variant of the cross-in-square plan.[141] The earliest extant example is the katholikon at the monastery of Hosios Loukas, with a 9-meter (30 ft) wide dome built in the first half of the 11th century.[126] This hemispherical dome was built without a drum and supported by a remarkably open structural system, with the weight of the dome distributed on eight piers, rather than four, and corbelling used to avoid concentrating weight on their corners. The use of squinches to transition from those eight supports to the base of the dome has led to speculation of a design origin in Arab, Sasanian, or Caucasian architecture, although with a Byzantine interpretation. Similar openness in design was used in the earlier Myrelaion church, as originally built, but the katholikon of Hosios Loukas is perhaps the most sophisticated design since the Hagia Sophia.[151] The smaller monastic church at Daphni, c. 1080, uses a simpler version of this plan.[152]

The katholikon of Chortiatis.[153]

The larger scale of some Byzantine buildings of the 12th century required a more stable support structure for domes than the four slender columns of the cross-in-square type could provide. The domes of the churches now called Kalenderhane Mosque, Gül Mosque, and the Enez Fatih mosque all had domes greater than 7 meters (23 ft) in diameter and used piers as part of large cruciform plans, a practice that had been out of fashion for several centuries. A variant of the cross-in-square, the "so-called atrophied Greek cross plan", also provides greater support for a dome than the typical cross-in-square plan by using four piers projecting from the corners of an otherwise square naos, rather than four columns. This design was used in the Chora Church of Constantinople in the 12th century after the previous cross-in-square structure was destroyed by an earthquake.[154]

The 12th century Pantokrator monastic complex (1118–36) was built with imperial sponsorship as three adjoining churches.[155] The south church, a cross-in-square, has a ribbed dome over the naos, domical vaults in the corners, and a pumpkin dome over the narthex gallery. The north church is also a cross-in-square plan. The middle church, the third to be built, fills the long space between the two earlier churches with two oval domes of the pumpkin and ribbed types over what appear to be separate functional spaces. The western space was an imperial mausoleum, whereas the eastern dome covered a liturgical space.[156]

There is a written account by Nicholas Mesarites of a Persian-style muqarnas dome built as part of a late 12th century imperial palace in Constantinople.[157] Called the "Mouchroutas Hall", it may have been built as part of an easing in tensions between the court of Manuel I Komnenos and Kilij Arslan II of the Sultanate of Rum around 1161, evidence of the complex nature of the relations between the two states. The account, written by Nicholas Mesarites shortly before the Fourth Crusade, is part of a description of the coup attempt by John Komnenos in 1200, and may have been mentioned as a rhetorical device to disparage him.[158]

Thirteenth to fifteenth centuries

Exterior of the Gračanica monastery from the front, showing the tall and narrow central drum and dome and two of the four tall and narrow corner drums and domes of the square plan
The Gračanica monastery in Kosovo, built under the medieval Kingdom of Serbia

The Late Byzantine Period, from 1204 to 1453, has an unsettled chronology of buildings, especially during the Latin Occupation. The fragmentation of the empire, beginning in 1204, is reflected in a fragmentation of church design and regional innovations. After 1261, new church architecture in Constantinople consisted mainly of additions to existing monastic churches, such as the Monastery of Lips and Pammakaristos Church, and as a result the building complexes are distinguished in part by an asymmetric array of domes on their roofs. This effect may have been in imitation of the earlier triple church Pantokrator monastic complex.[159] A 15th century account of a Russian traveler to Constantinople mentions an abandoned hall, presumably domed, "in which the sun, the moon, and the stars succeeded each other as in heaven."[157]

The church of

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See also

In the United States, Greek Orthodox churches beginning in the 1950s tended to use a large central dome with a ring of windows at its base evocative of the central dome of Hagia Sophia, rather than more recent or more historically common Byzantine types, such as the Greek-cross-octagon or five-domed quincunx plans. Examples include Annunciation Greek Orthodox Church, completed in 1961 but designed by Frank Lloyd Wright in 1957, Ascension Greek Orthodox Cathedral of Oakland (1960), and Annunciation Greek Orthodox Cathedral in Atlanta (1967).[198] The use of a large central dome in American Greek Orthodox churches continued in the 1960s and 1970s before moving toward smaller Middle Byzantine domes, or versions of Early Christian basilicas.[199]

A Byzantine revival style of architecture occurred in the 19th and 20th centuries. An early example of the revival style in Russia was the Cathedral of Christ the Saviour (1839–84), which was approved by the Tsar to be a model for other churches in the empire.[193] The style's popularity spread through scholarly publications produced after the independence of Greece and the Balkans from the Ottoman Empire.[194] It was used throughout Europe and North America, peaking in popularity between 1890 and 1914. The Greek Orthodox St Sophia's Cathedral (1877–79) and Roman Catholic Westminster Cathedral (begun 1895), both in London, are examples. The throne room of Neuschwanstein Castle (1885–86) was built by King Ludwig II in Bavaria.[195] In the late 19th century, the Hagia Sophia became a widespread model for Greek Orthodox churches.[190] In southeastern Europe, monumental national cathedrals built in the capital cities of formerly Ottoman areas used Neo-Classical or Neo-Byzantine styles. Sofia's Alexander Nevsky Cathedral and Belgrade's Church of Saint Sava are examples, and used Hagia Sophia as a model due to their large sizes.[196] Synagogues in the United States were built in a variety of styles, as they had been in Europe (and often with a mixture of elements from different styles), but the Byzantine Revival style was the most popular in the 1920s. Domed examples include The Temple of Cleveland (1924), the synagogue of KAM Isaiah Israel (1924) in Chicago, based upon San Vitale in Ravenna and Hagia Sophia in Istanbul, and the synagogue of Congregation Emanu-El (1926) in San Francisco.[197]

Ottoman architecture adopted the Byzantine dome form and continued to develop it.[188] One type of mosque was modeled after Justinian's Church of Sergius and Bacchus with a dome over an octagon or hexagon contained within a square, such as the Üç Şerefeli Mosque (1437–47).[189] The dome and semi-domes of the Hagia Sophia, in particular, were replicated and refined. A "universal mosque design" based upon this development spread throughout the world.[190] The first Ottoman mosque to use a dome and semi-dome nave vaulting scheme like that of Hagia Sophia was the mosque of Beyazit II. Only two others were modeled similarly: Kılıç Ali Pasha Mosque and the Süleymaniye Mosque (1550–57). Other Ottoman mosques, although superficially similar to Hagia Sophia, have been described as structural criticism's of it. When Mimar Sinan set out to build a dome larger than that of Hagia Sophia with Selimiye Mosque (1569–74), he used a more stable octagonal supporting structure.[191] The Selimiye Mosque is of the type originating with the Church of Sergius and Bacchus. Three other Imperial mosques in Istanbul built in this "Classical Style" of Hagia Sophia include four large semi-domes around the central dome, rather than two: Şehzade Camii, Sultan Ahmed I Camii (completed in 1616), and the last to be built: Yeni Cami (1597–1663).[192]

Italian Renaissance architecture combined Roman and Romanesque practices with Byzantine structures and decorative elements, such as domes with pendentives over square bays.[183][184] The Cassinese Congregation used windowed domes in the Byzantine style, and often also in a quincunx arrangement, in their churches built between 1490 and 1546, such as the Abbey of Santa Giustina.[185] The technique of using wooden tension rings at several levels within domes and drums to resist deformation, frequently said to be a later invention of Filippo Brunelleschi, was common practice in Byzantine architecture.[13] The technique of using double shells for domes, although revived in the Renaissance, originated in Byzantine practice.[186] The dome of the Pantheon, as a symbol of Rome and its monumental past, was particularly celebrated and imitated, although copied only loosely. Studied in detail from the early Renaissance on, it was an explicit point of reference for the dome of St. Peter's Basilica and inspired the construction of domed rotundas with temple-front porches throughout western architecture into the modern era. Examples include Palladio's chapel at Maser (1579–80), Bernini's church of S. Maria dell'Assunzione (1662-4), the Library Rotunda of the University of Virginia (1817–26), and the church of St. Mary in Malta (1833–60).[187]

Byzantium's neighboring Orthodox powers emerged as architectural centers in their own right during the Late Byzantine Period. The Bulgarian churches of Nesebar are similar to those in Constantinople at this time and, following the construction of Gračanica monastery, the architecture of Serbia used the "so-called Athonite plan", for example at Ravanica (1375–7). In Romania, Wallachia was influenced by Serbian architecture and Moldavia was more original, such as in the Voroneț Monastery with its small dome.[161] Moscow emerged as the most important center of architecture following the fall of Constantinople in 1453.[181] The Cathedral of the Assumption (1475–79), built in the Kremlin to house the icon of Our Lady of Vladimir, was designed in a traditional Russian style by an Italian architect.[182]

In Romanesque Italy, Byzantine influence can most clearly be seen in Venice's St Mark's Basilica, from about 1063, but also in the domed churches of southern Italy, such as Canosa Cathedral (1071) and the old Cathedral of Molfetta (c. 1160).[177] In Norman Sicily, architecture was a fusion of Byzantine, Islamic, and Romanesque forms, but the dome of the Palatine Chapel (1132–43) at Palermo was decorated with Byzantine mosaic, as was that of the church of Santa Maria dell'Ammiraglio (1140's).[178] The unusual use of domes on pendentives in a series of seventy Romanesque churches in the Aquitaine region of France strongly suggests a Byzantine influence. St. Mark's Basilica was modeled on the now-lost Byzantine Church of the Holy Apostles in Constantinople, and Périgueux Cathedral in Aquitaine (c. 1120) likewise has five domes on pendentives in a Greek cross arrangement.[179] Other examples include the a domed naves of Angoulême Cathedral (1105–28), Cahors Cathedral (c. 1100–1119), and the Abbey church of Sainte-Marie in Souillac (c. 1130).[180]

[176] Byzantine architecture was introduced to the

In the Balkans, where Byzantine rule weakened in the 7th and 8th centuries, domed architecture may represent Byzantine influence or, in the case of the centrally-planned churches of 9th century Dalmatia, the revival of earlier Roman mausoleum types. An interest in Roman models may have been an expression of the religious maneuvering of the region between the Church of Constantinople and that of Rome. Examples include the Church of Sv. Luka in Kotor, the Church of Sv. Trojce near Split, and the early 9th century Church of Sv. Donat in Zadar. The Church of Sv. Donat, originally domed, may have been built next to a palace and resembles palace churches in the Byzantine tradition. The architectural chronology of the central and eastern Balkans is unsettled during the period of the First Bulgarian Empire, in part because of similarity between Justinian-era churches from the 6th century and what may have been a revival of that style in the late 9th and early 10th centuries under the Christianized Bulgar tsars. Remains of the Round Church in Preslav, a building traditionally associated with the rule Tsar Simeon (893-927), indicate that it was a domed palace chapel. Its construction features, however, resemble instead 3rd and 4th century Roman mausolea, perhaps due to the association of those structures with the imperial idea.[172]

[171] (629-40).Cathedral of Mren (662-85), and the church in T'alinn (c. 600), a Ptghni in Ptghnavank. Other domed examples include church in Tekor from 608 to 615 and a cathedral of Dvin Armenian church building was prolific in the late 6th and 7th centuries and, by the 7th century, the churches tend to be either central plans or combinations of central and longitudinal plans. Domes were supported by either squinches (which were used in the Sasanian Empire but rarely in the Byzantine) or pendentives like those of the Byzantine empire, and the combination of domed-cross plan with the hall-church plan could have been influenced by the architecture of Justinian. Domes and cross arms were added to the longitudinal [170] from Syria, but the long traditions of wooden construction carried over stylistically. Some examples in stone as late as the 12th century are detailed imitations of clearly wooden prototypes.stonecutters (c. 483) originally had a wooden dome covered by a wooden pyramidal roof before this was replaced with stone construction in 618. Churches with stone domes became the standard type after the 7th century, perhaps benefiting from a possible exodus of Etchmiadzin Cathedral Armenian church domes were initially wooden structures. [136] [168] Constantinople's cultural influence extended from Sicily to Russia.


In Thessaloniki, a distinctive type of church dome developed in the first two decades of the 14th century. It is characterized by a polygonal drum with rounded colonnettes at the corners, all brick construction, and faces featuring three arches stepped back within one another around a narrow "single-light window".[165] One of the hallmarks of Thessalonian churches was the plan of a domed naos with a peristoon wrapped around three sides.[166] The churches of Hagios Panteleimon, Hagia Aikaterine, and Hagioi Apostoloi have domes on these ambulatory porticoes.[161] The five domes of the Hagioi Apostoloi, or Church of the Holy Apostles, in Thessaloniki (c. 1329) makes it an example of a five-domed cross-in-square church in the Late Byzantine style, as is the Gračanica monastery, built around 1311 in Serbia.[148] The architect and artisans of the Gračanica monastery church probably came from Thessaloniki and its style reflects Byzantine cultural influence.[167] The church has been said to represent "the culmination of Late Byzantine architectural design."[161]

Mistra was ruled from Constantinople after 1262, then was the suzerain of the Despotate of the Morea from 1348 to 1460.[163] In Mistra, there are several basilica plan churches with domed galleries that create a five-domed cross-in-square over a ground-level basilica plan. The Aphentiko at Brontochion Monastery was built c. 1310–22 and the later church of the Pantanassa Monastery (1428) is of the same type.[161] The Aphentiko may have been originally planned as a cross-in-square church, but has a blend of longitudinal and central plan components, with an interior divided into nave and aisles like a basilica. The barrel-vaulted nave and cross arms have a dome at their crossing, and the corner bays of the galleries are also domed to form a quincunx pattern. A remodeling of the Metropolis church in Mistra created an additional example. The Pantanassa incorporates Western elements in that domes in its colonnaded porch are hidden externally, and its domes have ribs of rectangular section similar to those of Salerno, Ravello, and Palermo.[164]

In the Despotate of Epirus, the Church of the Parigoritissa (1282–9) is the most complex example, with a domed octagon core and domed ambulatory.[161] Built in the capitol of Arta, its external appearance resembles a cubic palace. The upper level narthex and galleries have five domes, with the middle dome of the narthex an open lantern. This Greek-cross octagon design, similar to the earlier example at Daphni, is one of several among the various Byzantine principalities. Another is found in the Hagia Theodoroi at Mistra (1290–6).[162]


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