The presence of thermal waters is documented since Etruscan-Roman times: a votive storage in the so-called “Buca delle Fate” certifies veneration strictly connected to the waters. People thought they have sacred, healthy and therapeutic qualities since III Century B.C. already. A big rectangular pool found out in Campo Muri area is dated to Roman age.

During Medieval times, the Commune of Siena issued various decrees to preserve this precious resource, that became more and more popular and blooming through centuries.

The waters of Rapolano surface from subsoil with a temperature of about 40° C; they’re composed mainly by sulphur, bicarbonate and calcium, and a good quantity of magnesium, sodium and potassium.

Rapolanese sulphureous waters are particularly advisable for breathing diseases, gynaecological and skin infections, and they're suitable to make thermal mud ripen too. Moreover, by adjudging some essences you can create a lot of different aesthetic treatments.

Here the water route begins, starting from the thermal spa to the source of the first public aqueduct, Stitelli, dating back to the XIX Century, and then to the Fontacce spring, the San Giovanni thermal spring and the archaeological area of Campo Muri.