History of 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 periods 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.

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. 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. 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!”.

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. Timber-roofed basilicas, which had previously been the standard church form, would continue to be so in the medieval west.

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. 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.

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. 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. 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. 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. 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.

The current central dome, above the pendentives, is about 750 millimeters (30 in) thick. 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. 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. 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. 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. 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.

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. It may belong to a school of architecture from 4th and 5th century Milan. 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. Hollow amphorae were fitted inside one another to provide a lightweight structure for the dome and avoid additional buttressing. It is 18 meters (59 ft) in diameter. The amphorae were arranged in a continuous spiral, which required minimal centering and formwork but was not strong enough for large spans. 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.

In Constantinople, Justinian also tore down the aging Church of the Holy Apostles and rebuilt it on a grander scale between 536 and 550. 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. 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. 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. Justinian’s Basilica of St. John at Ephesus and Venice’s St Mark’s Basilica are derivative of Holy Apostles. More loosely, the Cathedral of St. Front and the Basilica of Saint Anthony of Padua are also derived from this church.

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. Alternatively, the building may have been octagonal in plan, rather than circular. The building was not free-standing and was located at the intersection of the public and private parts of the palace. Smaller windows filled with thin sheets of alabaster may have existed over each of the curtain-covered side niches and below the cornice at the base of the dome. 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. 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.

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. 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. 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.

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. By bracing the dome with broad arches on all four sides, the cross-domed unit provided a more secure structural system. 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.

Ninth century
Timber-roofed basilicas, which had been the standard form until the 6th century, would be displaced by domed churches from the 9th century on. 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. Resting domes on circular or polygonal drums pierced with windows eventually became the standard style, with regional characteristics.

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. Examples include an early 9th century church in Tirilye, now called the Fatih Mosque, and the palace chapel of the Myrelaion, built around 920. 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. It is often suggested that the five-domed design of St. Panteleimon at Nerezi, from 1164, is based on that of the Nea Ekklesia.

Tenth century
In the Middle Byzantine period, more complex plans emerge, such as the integrated chapels of Theotokos of Lips, a monastic church in Constantinople that was built around 907. It included four small chapels on its second floor gallery level that may have been domed.

The cross-in-square is the most common church plan from the 10th century until the fall of Constantinople in 1453. 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.

The palace chapel of the Myrelaion in Constantinople was built around 920 as a cross-in-square church and remains a good example. The earliest cross-in-square in Greece is the Panagia church at the monastery of Hosios Loukas, dated to the late 10th century, but variations of the type can be found from southern Italy to Russia and Anatolia. They served in a wide variety of church roles, including domestic, parish, monastic, palatial, and funerary.

The distinctive rippling eaves design for the roofs of domes began in the 10th century. In mainland Greece, circular or octagonal drums became the most common.

Eleventh century
In Constantinople, drums with twelve or fourteen sides were popular beginning in the 11th century. 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.

The domed-octagon plan is a variant of the cross-in-square plan. 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. 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. The smaller monastic church at Daphni, c. 1080, uses a simpler version of this plan.

The katholikon of Nea Moni, a monastery on the island of Chios, was built some time between 1042 and 1055 and featured a nine sided, ribbed dome rising 15.62 meters (51.2 ft) above the floor (this collapsed in 1881 and was replaced with the slightly taller present version). The transition from the square naos to the round base of the drum is accomplished by eight conches, with those above the flat sides of the naos being relatively shallow and those in the corners of the being relatively narrow. The novelty of this technique in Byzantine architecture has led to it being dubbed the “island octagon” type, in contrast to the “mainland octagon” type of Hosios Loukas. Speculation on design influences have ranged from Arab influence transmitted via the recently built domed octagon chapels at the Church of the Holy Sepulchre in Jerusalem or the Al-Hakim Mosque in Islamic Cairo, to Caucasian buildings such as the Armenian Cathedral of the Holy Cross. Later copies of the Nea Moni, with alterations, include the churches of Agios Georgios Sykousis, Agioi Apostoli at Pyrghi, Panagia Krina, and the Church of the Metamorphosis in Chortiatis.

Twelfth century
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.

The 12th century Pantokrator monastic complex (1118–36) was built with imperial sponsorship as three adjoining churches. 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.

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. 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.

Thirteenth century
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.

The church of Hagia Sophia in the Empire of Trebizond dates to between 1238 and 1263 and has a variation on the quincunx plan. Heavy with traditional detailing from Asia Minor, and possibly Armenian or Georgian influence, the brick pendentives and drum of the dome remain Byzantine.

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.

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. Built in the capital 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).

Fourteenth and fifteenth centuries
Mistra was ruled from Constantinople after 1262, then was the suzerain of the Despotate of the Morea from 1348 to 1460. 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. 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.

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”. One of the hallmarks of Thessalonian churches was the plan of a domed naos with a peristoon wrapped around three sides. The churches of Hagios Panteleimon, Hagia Aikaterine, and Hagioi Apostoloi have domes on these ambulatory porticoes. 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. The architect and artisans of the Gračanica monastery church probably came from Thessaloniki and its style reflects Byzantine cultural influence. The church has been said to represent “the culmination of Late Byzantine architectural design.”

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.”

Influence
Armenia
Constantinople’s cultural influence extended from Sicily to Russia. Armenia, as a border state between the Roman-Byzantine and Sasanian empires, was influenced by both. The exact relationship between Byzantine architecture and that of the Caucasus is unclear. Georgia and Armenia produced many central planned, domed buildings in the 7th century and, after a lull during the Arab invasions, the architecture flourished again in the Middle Byzantine Period. Armenian church domes were initially wooden structures. Etchmiadzin Cathedral (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 stonecutters 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. 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 cathedral of Dvin from 608 to 615 and a church in Tekor. Other domed examples include Ptghnavank in Ptghni (c. 600), a church in T’alinn (662-85), the Cathedral of Mren (629-40), and the Mastara Church (9th and 10th centuries).

The Balkans
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 (hr) 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.

The Rus
Byzantine architecture was introduced to the Rus’ people in the 10th century, with churches after the conversion of Prince Vladimir of Kiev being modeled after those of Constantinople, but made of wood. The Russian onion dome was a later development. The earliest architecture of Kiev, the vast majority of which was made of wood, has been lost to fire, but by the 12th century masonry domes on low drums in Kiev and Vladimir-Suzdal were little different than Byzantine domes, although modified toward the “helmet” type with a slight point. The Cathedral of St. Sophia in Kiev (1018–37) was distinctive in having thirteen domes, for Jesus and the twelve Apostles, but they have since been remodeled in the Baroque style and combined with an additional eight domes. The pyramidal arrangement of the domes was a Byzantine characteristic, although, as the largest and perhaps most important 11th century building in the Byzantine tradition, many of the details of this building have disputed origins. Bulbous onion domes on tall drums were a development of northern Russia, perhaps due to the demands of heavy ice and snowfall along with the more rapid innovation permitted by the Novgorod region’s emphasis on wooden architecture. The central dome of the Cathedral of St. Sophia (1045–62) in Novgorod dates from the 12th century and shows a transitional stage. Other churches built around this time are those of St. Nicholas (1113), the Nativity of the Virgin (1117), and St. George (1119–30).

Romanesque Europe
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 (it) (c. 1160). 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). 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. Other examples include the domed naves of Angoulême Cathedral (1105–28), Cahors Cathedral (c. 1100–1119), and the Abbey church of Sainte-Marie in Souillac (fr) (c. 1130).

Orthodox Europe
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. Moscow emerged as the most important center of architecture following the fall of Constantinople in 1453. 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.

Italian Renaissance
Italian Renaissance architecture combined Roman and Romanesque practices with Byzantine structures and decorative elements, such as domes with pendentives over square bays. 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. 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. The technique of using double shells for domes, although revived in the Renaissance, originated in Byzantine practice. 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 (it) (1662-4), the Library Rotunda of the University of Virginia (1817–26), and the church of St. Mary in Malta (1833–60).

Ottoman Empire
Ottoman architecture adopted the Byzantine dome form and continued to develop it. 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). 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. 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. 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).

Modern revival
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. The style’s popularity spread through scholarly publications produced after the independence of Greece and the Balkans from the Ottoman Empire. 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. In the late 19th century, the Hagia Sophia became a widespread model for Greek Orthodox churches. 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. 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.

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). 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.

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