Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Terme Libere, Acqua Borra, in Rapolano Terme, Tuscany, taps sulfurous water at 40°C amid the Sienese countryside. Indoor pools, massages and a sauna are available on site.
Insider tip — Terme Libere at Acqua Borra near Rapolano Terme is a beloved free-access thermal pool set in the rolling Crete Senesi landscape of central Tuscany. Sulfurous waters bubble up from the earth at around 40°C, filling a large open-air basin that locals have used for centuries. The surrounding travertine formations and the scent of sulfur create a primordial atmosphere unique to this Sienese volcanic zone. Visit on a weekday to enjoy the pools without the weekend crowds that arrive from Florence and Siena.