Nave

The Basilica of Sant' Apollinare Nuovo is a basilica church in Ravenna, Emilia-Romagna (Italy). It was erected by the Ostrogoth King Theodoric as his palace chapel, during the first quarter of the 6th century (as attested in the Liber Pontificalis). This Arian church was originally dedicated in 504 CE to Christ the Redeemer.

It was reconsecrated in 561, under the rule of the Byzantine emperor Justinian I, under the new name "Sanctus Martinus in Coelo Aureo" ("Saint Martin in Golden Heaven"). Suppressing the Arian cult, the church was dedicated to Saint Martin of Tours, a foe of Arianism. According to legend, Pope Gregory the Great ordered that the mosaics in the church to be blackened, as their golden glory distracted worshippers from the prayers. The basilica was renamed again in 856, when relics of Saint Apollinaris were transferred from the Basilica of Sant'Apollinare in Classe because of the threat posed by frequent raids of Adriatic pirates.

Its apse and atrium underwent modernization at various times, beginning in the 6th century with the destruction of mosaics whose themes were too overtly Arian or which expressed the king's glory, but the mosaics of the lateral walls, twenty-four columns with simplified Corinthian capitals, and an Ambo are preserved. On some columns parts (arms and hands) of figures once representing praying Goths and Theodoric's court, deleted in Byzantine times, can be seen. Renovations (and alterations) were done to the mosaics in the mid-19th century by Felice Kibel. The present apse is a reconstruction after being damaged during World War I.

The Byzantine Empire (or Byzantium) was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the "Roman Empire" (Greek: Βασιλεία Ῥωμαίων, Basileia Rhōmaiōn) or Romania (Ῥωμανία) to its inhabitants and neighbours, it was the direct continuation of the Ancient Roman State and maintained Roman state traditions. Byzantium is today distinguished from ancient Rome proper insofar as it was oriented towards Greek culture, characterised by Christianity rather than Roman paganism and was predominantly Greek-speaking rather than Latin-speaking.

As the distinction between Roman Empire and Byzantine Empire is largely a modern convention, it is not possible to assign a date of separation, but an important point is Emperor Constantine I's transfer in 324 of the capital from Nicomedia (in Anatolia) to Byzantium on the Bosphorus, which became Constantinople, "City of Constantine" (alternatively "New Rome"). The Roman Empire was finally divided in 395 AD after the death of Emperor Theodosius I (r. 379–395), thus this date is also very important if the Byzantine Empire (or Eastern Roman Empire) is looked upon as completely separated from the West. The transition to Byzantine history proper finally begins during the reign of Emperor Heraclius (r. 610–641), since Heraclius effectively established a new state after reforming the army and administration by introducing themes and by replacing the official language of the Empire from Latin to Greek.