The Austin Friars had the church built on a pre-existing Palaeo-Christian church dating from the late 11th to the early 12th century. The building is arranged on two levels.
Under the church proper is a crypt, accessible via a flight of wide stairs. The crypt, whose high colonnades are indicative of a Roman building fulfilling commercial or harbour functions, is divided up by pillars and columns. The upper floor has a basilican plan, with a nave and two aisles and a rich mosaic floor. The lofty bell tower has been obtained from a pre-existing tower-house.
Where: Via Cavour - Pisa