San Casciano dei Bagni (Tuscany)

San Casciano dei Bagni is a comune (municipality) in the Province of Siena in the Italian region Tuscany. It is a member of "Borghi più belli d'Italia" (the most beautiful villages in Italy). San Casciano dei Bagni borders the following municipalities: Abbadia San Salvatore, Acquapendente, Allerona, Cetona, Città della Pieve, Fabro, Piancastagnaio, Proceno, Radicofani, Sarteano. The history of San Casciano is strictly connected to the presence of hot waters, with 42 springs, a mean temperature of 42 °C (108 °F) and a daily delivery of 5.5 million litres (1,500,000 US gal). According to a legend, the Balnea Clusinae were founded by Porsenna, an Etruscan king of Chiusi. The baths were popular also during the Roman era, Augustus being amongst its users. Nowadays, San Casciano it is the third most important in Europe for thermal springs.