Petriolo Terme

The sulfurous thermal waters at Petriolo Terme emerge at temperatures around 43°C (109°F) along the Farma River in Tuscany. The natural hot springs have been used since Roman times for their therapeutic properties. The waters contain sulfur compounds and minerals typical of geothermal springs in the region.

Petriolo Terme is located along the Farma River in the province of Grosseto, Tuscany, Italy. The site sits in a natural setting where the hot springs emerge in a river valley. Its location between Siena and Grosseto makes it accessible to visitors exploring southern Tuscany.

Petriolo Terme has both natural outdoor pools along the Farma River that can be accessed freely and a more developed spa facility that charges admission. The natural hot springs have been used since Roman times, with records documenting their medieval use. Visitors should check current access conditions and any restrictions before visiting.

Petriolo Terme's sulfurous waters have been documented in records of the medieval Republic of Siena and were used since Roman times. Historical figures including members of the Medici and Sienese nobility reportedly visited the springs. The site's long therapeutic use makes it one of Tuscany's historically significant thermal destinations.