Santa Maria di Castelnuovo: 12th-century church with portal with a Byzantine style lunette, signed and dated 1253, depicting the Madonna enthroned with Sts Michael and Gabriel. The interior has a fresco by Pietro di Domenico of Montepulciano.[3] Sant'Agostino: 13th century church and cloister, remade one century later together with the cathedral. Istrian stone portal by Giuliano da Maiano.