Sets on the summit of a back not too far from the Cassia, Castiglione of Orcia it is a small predominantly agricultural and handicraft center. Ancient center quoted since the first decades of the VIII century Castiglione of Orcia was inzialmente ownership of the Aldobrandeschis, contended from the abbey of St. Savior: become then free Commune it lost its own autonomy because of the conquest senese. The actual Castiglione, harvest to the feet of the mighty Fortress of the Aldobrandeschis, offers still its medieval aspect to the visitor with picturesque and characteristic angles: the principal plaza devoted the Oldie to the painter Lorenzo of said Pietro (here been born in 1492) on which the Town Building is leaned out it is entirely covered by a flooring realized with pebbles of river geometrically divided by riquadrature in bricks.In the center of the plaza a seventeenth-century fountain is set in travertino. The Church of the Saints Stephen and Worthy it is the religious building of great interest, his 500 frescos, work of Simone Martini and the Lorenzetti, is preserved to Siena near the Superintendence.