Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Le Caldane, Etruscan-Roman baths, in Colle di Val d'Elsa, Siena province, taps a sulfurous spring at 40°C. Indoor pools, massages and a sauna complete the site.
Insider tip — Le Caldane preserves Etruscan and Roman thermal heritage in the Sienese hills. The sulfurous springs were used for centuries before modern Italy — fragments of Roman infrastructure are still visible nearby.