Cathedral of Santa Maria Assunta. It was enlarged in the 13th century after an earthquake. It houses a ciborium and some angels by Mino da Fiesole, a notable wood Deposition (1228), a masterwork of Romanesque sculpture and the Sacrament Chapel, with paintings by Santi di Tito, Giovanni Balducci and Agostino Veracini. In the center of the vault are fragments of an Eternal Father by Niccolò Circignani. Also noteworthy is the Addolorata Chapel, with a terracotta group attributed to Andrea della Robbia and a fresco of Riding Magi by Benozzo Gozzoli. In the nearby chapel, dedicate to the Very Holy Name of Jesus, is a table with Christ's monogram, allegedly painted by Bernardine of Siena. The rectangular bell tower is from 1493.