The main feature of this medieval town, which stands on the Sienese border between the regions of Umbria and Lazio, is its wealth of hot spring water, numbering as many as 42 springs. The waters here were already known in Roman times (Oratius alludes to their therapeutic qualities).
The main economic activity is related to hot springwater tourism and to "agritourism" which thrives thanks to the unspoilt woods and countryside.
Today, a new building stands next to the former spa centre where it is possible to have a variety of mud and water treatments. In the near vicinity the swimming pool is filled with hot spring water at 40°C. It is worth visiting the fairy-tale castle of Fighine.
Traditional festivals include: the "Sagra dei Pici" - a homemade pasta speciality - in Celle sul Rigo, a village built on the site of a former fortress. The festival is held on the last Sunday in May. In San Casciano the "Sagra del Ciaffagnone" takes place on the first Sunday in June.