Chiusdino is located in a magnificent location, overlooking the Merse Valley and the Metalliferous Hills amid woods and pastureland. The position and structure of the fortified mediaeval castle demonstrate an evident defensive strategy. Chiusdino was governed by the Bishops of Volterra and subsequently (13th century) by the Commune of Siena.
Here you can admire the suggestive Abbey of San Galgano, now completely ruined; according to the tradition, in 1180 on Christmas Day San Galgano fixed his sword into the stone in order to realize a cross. Now in Montesiepi's Hermitage a plexiglass shrine with the sword into the stone is still preserved.
Do not miss to visit the Frosini castle, ancient residence of the Conti della Gherardesca (1004), Luriano, Castelletto and the Montalcinello castle.