Crossed by the Via Cassia stands San Quirico d’Orcia which, already at the time of Barbarossa, was an important rest and refreshment station on the Via Francigena.
At the beginning of the town you can admire the magnificent 12th-century Collegiate Church with a magnificent wooden choir.
The sixteenth-century gardens called Horti Leonini open onto the square, representing a magnificent green oasis within the walls of the ancient town.