San Quirico d'Orcia (31 km) is a mediaeval town dating back to the 8th century and built along the Via Francigena, an ancient pilgrim route.
During the 13th century, the town walls were extended and hospices were built to accommodate pilgrims on their journey to Rome. The Romanesque collegiate church was built in the 12th century and its imposing doorway is the best example of Lombard architecture to be found in the province of Siena.