Sasso Pisano is a typical Tuscan hilltown which sits in the municipality of Castelnuovo Val di Cecina. Little by little, as you near the town, the castle – the oldest settlement here – and its circuit of walls hove into view. Geothermic activity is evident even at Sasso Pisano, especially at Larderello, in the form of soffioni (jets of steam from the dry earth), putizze (gas emissions composed mainly of hydrogen sulphate, hence their smell of rotten eggs) and lagoni (depressions in the earth, where the geothermic waters collect unpredicatably).
In the town centre you can visit the Etruscan and Roman Museum, known otherwise as the Antiquarium. This is home to a number of interesting finds from the archaeological area called “Il Bagnone”, including a statue of Minerva, made from lead and tin, coins, a terracotta vase, and rooftiles with a typical Etruscan indentation, and much more.
Leaving the town and walking around the cemetery, you come across an ancient laundry, where water bubbles up into a tub at a temperature of 36°C. But this is only one of the many hot springs across the Sasso Pisano territory. The Biolago, for example, is a bathing complex designed with health and relaxation in mind, to which end it comprises a calidarium and a hydromassage, a tepidarium and a phytodepurated lake at a natural temperature. The Biolago is fed by hot springs from the surrounding area and by cold waters which are heated from a central geothermic source,
The next leg of the journey takes you the Etrusco-Roman bath complex. Around yet more natural springs, you can admire the Etruscan spas that date back to the late Hellenistic period. The remains of a colonnade are still visible, and two bath constructions with pools and a number of vestibules, which probably served to welcome visitors and pilgrims. Some tiles have been found with the Etruscan spural huflunas inscribed on them, which confirms that the baths were a public destination.