The collegiate church of San Lorenzo in 1955 was declared Marian Shrine. It has a renaissance facade and a Latin cross plan. On the side altars, the Baptism of Jesus and the entry of Jesus into Jerusalem to the sienese school of the XVIII century.
Behind the high altar is the wooden choir of the sienese bottega (1513). In the chapel of the SS. The sacrament, the beautiful tabernacle and marble ciborium of Lorenzo di Mariano said the Marrina (1514). In the chapel of the Buonconsiglio Castle, the Madonna del Buonconsiglio Francesco Bonichi (1761), and on the sides two ribbed tables with the Angel and the Virgin Annunciate by Girolamo del Pacchia (1514 ca.).