The Early Christian Monuments of Ravenna are a unique collection of mosaics and monuments from the 5th and 6th centuries. Ravenna, an important port, was known under the Romans and Byzantines as Classis. It developed into a major centre of Christian art and culture on the instigation of Galla Placidia, the wife of Western Roman Emperor Constantius III (and regent of that empire herself for a few years). She was a fervant Christian and was involved in the building and restoration of various chu