The Basilica of San Vitale is a church in Ravenna, Italy and one of the most important examples of early Christian Byzantine art and architecture in western Europe. The building is styled an "ecclesiastical basilica" in the Roman Catholic Church, though it is not of architectural basilica form. It is one of eight Ravenna structures inscribed on the UNESCO World Heritage List.
The church has an octagonal plan. The building combines Roman elements: the dome, shape of doorways, and stepped towers; with Byzantine elements: polygonal apse, capitals, and narrow bricks. The church is most famous for its wealth of Byzantine mosaics, the largest and best preserved outside of Constantinople. The church is of extreme importance in Byzantine art, as it is the only major church from the period of the Emperor Justinian I to survive virtually intact to the present day. Furthermore, it is thought to reflect the design of the Byzantine Imperial Palace Audience Chamber, of which nothing at all survives. The belltower has four bells, the tenor one dates to the 16th century. According to legend, the church was erected on the site of the martyrdom of Saint Vitalis. However, there is some confusion as to whether this is the Saint Vitalis of Milan, or the Saint Vitale whose body was discovered together with that of Saint Agricola, by Saint Ambrose in Bologna in 393.