The Archiepiscopal or St Andrew’s Chapel (Capella Arcivescovile o di Sant’Andrea) was the private oratory of the bishops of Ravenna. It was constructed around AD 500 with the mosaics dating from the same period.
The chapel with a Greek cross floor plan was originally dedicated to Christ the Savior but is currently dedicated to St Andrew. The vaults have their original mosaics while Lucca Longhi painted other parts of the higher walls during the sixteenth century.