The ancient village of Bagno Vignoni is located in the heart of Tuscany, in the Val d'Orcia Natural Park. These thermal waters have been used since Roman times. At the heart of the village is the "Square of Sources", a rectangular tank, of 16th-century origin, which contains the original source of water that comes from the underground aquifer.
Since the days of the Etruscans and Romans, the spa of Bagno Vignoni was visited by such eminent personalities as Pope Pius II, St. Catherine of Siena, Lorenzo the Magnificent and many other artists who had elected the village as a main holiday resort. Legend has it that St. Catherine's mother took her on vacation to Bagno Vignoni, in hopes that she would reconsider her desire to take religious vows. However, St. Catherine could not be persuaded. The Basilica of San Domenico in Siena, which is also known as St. Catherine's Cathedral, attests to the fact that while she may have relaxed in the thermal waters of Bagno Vignoni, she ultimately answered a higher calling.