in Ravenna, Italy Constantine's conversion to
Christianity led to extensive building of Christian
basilicas in the late 4th century, in which floor, wall, and ceiling mosaics were adopted for Christian uses. The earliest examples of Christian basilicas have not survived, but the mosaics of
Santa Constanza and
Santa Pudenziana, both from the 4th century, still exist. In another great Constantinian basilica, the
Church of the Nativity in
Bethlehem, the original mosaic floor with typical Roman geometric motifs is partially preserved. The reign of
Justinian I in the 6th century coincided with the first golden age of the Byzantine Empire. In 537, he completed the construction of a new
patriarchal cathedral in the capital city of Constantinople that would be the global center of the Orthodox Church: the
Hagia Sophia. At the time, it was the world's largest building and considered the epitome of
Byzantine architecture. The cathedral was decorated throughout with what were undoubtedly some of the most incredible figurative mosaics of this time period, but unfortunately these were all destroyed during the
Iconoclasms that followed. The oldest mosaics that exist today in Hagia Sophia date from the 10th through the 12th centuries, not this earlier period. After
Rome was sacked,
Ravenna became the capital of the
Western Roman Empire from 402 until 476, when the empire collapsed after being conquered by
Theodoric the Great and the
Ostrogoths. While Ravenna was under Gothic control,
Arian patrons had embarked upon a notable building program of
chapels and
baptisteries in Ravenna. In 535, the city was conquered by
Justinian I, who created the
Exarchate of Ravenna, effectively making Ravenna the seat of Byzantine power on the Italian Peninsula.
Orthodox bishops under Justinian continued and expanded the construction of
basilicas to the adjacent port city of
Classe, commissioning some of the finest mosaics anywhere in the world. Surviving monuments, some of which predate Exarchate, include the
Basilica of San Vitale, the
Archiepiscopal Chapel, the
Arian Baptistry, the
Neonian Baptistry, the
Mausoleum of Galla Placidia, the
Basilica Sant’Apollinare Nuovo, the
Mausoleum of Theodoric and the
Basilica of Sant'Apollinare in Classe. All eight of these monuments have been inscribed on the
UNESCO World Heritage list as superb examples of early Christian mosaic art. in
Thessaloniki, Greece, which are some of the earliest remaining examples of early Christian mosaic art Although it might be the most famous, Ravenna is by no means the only place where Early Byzantine mosaics are well-preserved today. The city of
Thessaloniki in Greece was the second most important city in the empire in terms of both wealth and size, and like Ravenna its early Christian monuments have been designated UNESCO World Heritage sites. Masterpieces of early mosaic art in Thessaloniki include the
Church of Hosios David, the
Hagios Demetrios, and the
Rotunda. In addition, archeological discoveries in the 19th and 20th centuries unearthed many
Early Byzantine mosaics in the Middle East, including the
Madaba Map in Jordan as well as other examples in Egypt, Lebanon, Syria, Israel, and Palestine. ==The Iconoclasm==