CALIDARIO - the etruscan hot springs: The Calidario is a natural lake constantly feed by a thermal natural spring with hot water at 36 °C (equivalent to 97 °F). The location is in the town of Venturina, near the Tuscan coast – less than 5 km, in the splendour of the Etruscan coast. more info

Wellness in Petriolo:

Weelness & SPA of Saturnia:

Wandering along the pathways that meander through the countryside, between the thermal waterfalls and veils of steam, traces left by history can be made out: evocative Etruscan necropolises, elegant Roman villas, mysterious medieval fortresses.....

Saturnia is located in the heart of Tuscan Maremma.

Grotta Giusti natural SPA: Situated in the heart of Tuscany in Monsummano Terme. Grotta Giusti benefits from its very own thermal grotta, a fascinating natural cave with a hot water underground lake in which guests can enjoy a relaxing and detoxifying steam bath. In addition to the steam baths, the Spa offers mud therapy, ozonised baths in thermal water, massages, inhalation treatment, a  new area for Oriental Disciplines, a gym center , an avant garde Aesthetic Medicine Centre and a spacious relaxation zone.
The new open-air thermal swimming pool, a high-tech facility measuring 750 sq. m., with a large and spectacular waterfall and underwater hydromassage in spa water . more info