This is one of the most interesting centres in Tuscany because of its original castle on an elliptical plan, closed in by a wall with towers. The old village centre presents, perfectly conserved, the Palazzo Comunale dating from the XIII century. Inside is a small museum containing paintings from the Siena and Aretine Schools as well as valuable pieces of gold works from the late Gothic period such as the famous Tree relic of Lucignano. Of great note are other religious buildings and the church of San Francesco decorated with frescoes by the Sienese painters Bartolo di Fredi and Taddeo di Bartolo. Of great interest is the one above the first altar of the right aisle known as the "Trionfo della Morte" (Death Victory) in which, in a very effective way, represented the precariousness of human life.