Of the Gothic building, the nave, aisles and the façade are in white (marble) and black (slate) stripes, divided into three sectors by fake columns with Lombard bands; in the center is a large rose window, while on the sides are two double mullioned windows. The façade includes a late Roman sarcophagus with an Allegory of the Autumn, which originally was used as the tomb of Lamba Doria, who had taken it to Genoa from Korčula in Dalmatia. At one time, large chains, which once had protected the harbor of Pisa and which had been obtained as booty after the victory at the Battle of Meloria (1284), were draped across the facade. In the 19th century, they were returned to Pisa.