A destination for travelers during ancient times, San Casciano dei Bagni is a member of a group of communities that are identified to modern tourists as the "prettiest Italian villages" (borghi piu belli d'Italia).

The history of San Casciano is strictly connected to the presence of hot fresh waters from 42 springs with a mean temperature of 42 °C (108 °F) and a daily delivery of 5.5×10^6 L (1,500,000 US gal) (third in Europe).

In 2022, a trove of 24 bronze Etruscan statues was discovered during archaeological excavations that began in 2019 at the nearby ancient thermal baths.

The Etruscan artifacts had decorated an earlier sanctuary that had existed at the site and they were buried in new construction by the Romans, likely in a rededication ritual.

[6] The statues were covered by approximately 6,000 ancient bronze, silver, and gold coins and the artifacts were in an excellent state of preservation.