Bagni San Filippo

To begin with, Bagni San Filippo rises up near Monte Amiata, inside the splendid UNESCO World Heritage Site of Val d'Orcia. Totally awash in nature, amongst trees and rocks that intersperse with waterfalls, the zone running toward the Valley begins to beget waters that spill into the Fosso Bianco, a creek inside a deep wood where more hot springs (some natural, some artificial) pop up one after the other. The symbol of this zone is Balena Bianca (or White Whale), the name of the most suggestive and evocative of the waterfalls here; the Balena Bianca seems but a large mass with a crustacean's mouth, a form that arose from the thermal water's sediments. Rendering the entire scene even more spectacular is the contrast between tones of green and white and the colors of the thermal waters that mix with the creek waters.

San Casciano dei Bagni

At the border with Siena lies San Casciano dei Bagni, where visitors will find a total of 42 hot springs, making it the third-largest thermal complex in Europe. Known since Antiquity, its springs were discovered by the Etruscans, and loved by Emperor Augustus. Today these open baths hidden in dense, thriving forests, and the elegant private thermal centers located in pristine wilderness make San Casciano a preferred destination for spa lovers.

Bagno Vignoni

Bagno Vignoni is another fantastic little Medieval village. With its characteristic piazza boasting an enormous 16th-Century thermal bathtub (no longer in use, however), Bagno Vignoni is truly fascinating. The town sits on a volcanic fault line that, since Etruscan times, has meant its importance as a tourist destination. From the fault’s high point originates a spectacular system of small waterfalls that carry water all the way to the underlying valley. Here boiling water collects in natural basins, and acquires a magnificent and crystal shade of sky blue.

Bagni di Petriolo

In the Commune of Monticiano are the Bagni di Petriolo, situated on the banks of the Farma stream that flows into the River Merse. Cited by both Cicero and Martial, these open thermal springs can be found on an inlet of the stream; the waters, loaded with hydrogen sulfide among other compounds, arrive at a temperature of 43º C or 109º F. Around the 15th Century, the first thermal establishment was built in Bagni di Petriolo; during the renaissance age, the baths took on notable prestige, so much so that even members of the Medici and Gonzaga Families flocked here.