Built by Theodoric between 493 and 526, this basilica has a nave and two aisles separated by Corinthian columns. It is decorated with superb mosaics on a golden background: scenes from the Life of Christ, the saints and the prophets are represented above a procession of martyrs leaving Theodoric’s palace, guided towards Christ by St Martin. Opposite is a procession of maidens leaving the town and port, guided by the Three Kings.