The interior of Amalfi Cathedral is sumptuously Baroque but the underlying architecture is Romanesque. The triumphal arch in the apse is supported by two ancient columns from Paestum. The paintings on the walls and ceilings (by Andrea D'Asta and Castellano in the 18th century) depict the life and miracles of St. Andrew. The high altar is made from the sarcophagus of Archbishop Pietro Capuano (d.1359), which is decorated with fine bas-reliefs of the Twelve Apostles with St. Basil, St. Nicholas, Jesus and the Virgin Mary.