The door of Saint Rainerius is decorated with 24 bronze relief sculptures showing stories of the New Testament. This door is one of the first produced in Italy during the Middle Ages, after the importation of numerous examples from Constantinople (to Amalfi, Salerno, Rome, Montecassino, Venice, etc.), and a completely western sensibility, detached from the Byzantine tradition, can be admired. Above the doors are four open galleries, with, at the top, the Madonna and Child and, in the angles, the four evangelists. The tomb of Buscheto is found to the left of the north door of the facade.