03/23/2026
10 free thermal baths in Italy that will ruin expensive spas for you forever
CASCATE DEL MULINO — SATURNIA, TUSCANY
The most famous free thermal baths in Italy.
Behind an ancient mill, sulphurous water cascades over natural travertine rock terraces into a series of turquoise pools.
The water temperature is a constant 37.5°C year round.
Free to enter. Open 24 hours. Open 365 days a year.
In winter, steam rises from the pools into the cold air.
Province of Grosseto, southern Maremma.
BAGNI SAN FILIPPO — VAL D'ORCIA, TUSCANY
In the woods near Monte Amiata, province of Siena.
Hot springs flow through the forest at temperatures between 30°C and 48°C.
The water carries calcium carbonate deposits that have built up over centuries into white limestone formations.
The largest is called the Balena Bianca — the White Whale.
It looks like snow in the middle of a Tuscan forest.
The pools along the Fosso Bianco path are free to enter.
BAGNI DI PETRIOLO — PROVINCE OF SIENA, TUSCANY
Along the Farma river between Monticiano and Civitella Paganico.
The water emerges at 43°C.
Known since Roman times.
The remains of a medieval fortified wall built by the Sienese in 1404 still stand around the site.
The natural pools are free in any season.
The sulphur smell is strong.
Stay in anyway.
SAN CASCIANO DEI BAGNI — PROVINCE OF SIENA, TUSCANY
At the foot of the medieval hilltop village.
The Bagno Grande and Bagno Bossolo are the same Roman stone pools used for two thousand years.
Water flows at 41°C.
Free to enter. Accessible only on foot from the parking area.
In 2022, archaeologists found over 24 intact bronze Etruscan and Roman statues in the thermal deposits directly beside the free pools.
The excavation is still ongoing.
BAGNO VIGNONI — VAL D'ORCIA, TUSCANY
A village where the main square is a 16th century thermal pool at 52°C.
The square pool is protected — you cannot bathe in it.
The free thermal springs are in the Parco dei Mulini below the village, reached by a short path.
The pools vary in temperature and clarity by season.
Worth the walk in any condition.
BULLICAME — VITERBO, LAZIO
Two and a half kilometres from the centre of Viterbo.
A thermal spring emerging at 58°C at the source, cooling to a bathable temperature in the natural pool below.
Dante mentioned it in the Inferno.
Free to enter. Open every day. Large free parking directly in front.
The white thermal mud on the pool floor is rich in sulphur and minerals.
Romans came here two thousand years ago.
You can come for nothing today.
PISCINE CARLETTI — VITERBO, LAZIO
Two and a half kilometres from Viterbo, five minutes from the Bullicame.
A network of free thermal pools fed by a hyperthermal spring reaching up to 58°C at source.
The pools themselves sit between 36°C and 40°C.
Free to enter. Open 24 hours. Free parking.
One of the most appreciated free thermal areas north of Rome.
Completely unknown to most tourists.
SAN CASCIANO DEI BAGNI free baths replaced by this — SORGETO — ISCHIA, CAMPANIA
On the southern coast of Ischia, accessible by taxi boat from Sant'Angelo or on foot via 200 steps from the district of Panza.
Hyperthermal water bubbles up from the seabed at 90°C and mixes with the sea to create natural thermal pools directly in the water.
Free to use year round.
The rocks are volcanic and extremely hot underfoot — wear shoes or sandals.
One of the most extraordinary free bathing experiences in Italy.
TERME LUIGIANE FREE BATHS — ACQUAPPESA, CALABRIA
The Terme Luigiane resort has the most sulphurous water in Europe — 173 mg per litre of sulphur, the highest recorded in the country.
Beside the paid resort complex there are free natural wild baths where the same spring water flows freely into natural pools in an unspoiled setting with no facilities.
Province of Cosenza, Tyrrhenian coast of Calabria.
One kilometre from the sea.
Almost nobody outside Calabria knows this exists.
BIVONGI — PROVINCE OF REGGIO CALABRIA, CALABRIA
Confirmed free by the official Calabria regional tourism authority.
Natural thermal pools fed by sulphurous springs in the province of Reggio Calabria.
Set in a natural unspoiled area in the southern Calabrian countryside.
The waters are used for dermatological and rheumatological conditions.
One of the most remote and authentic free thermal experiences in Italy.
PRACTICAL NOTE
Bring old swimwear — sulphurous water discolours fabric permanently.
Bring a towel you do not mind ruining.
Most of these are car only — no public transport reaches them directly.
Best seasons are autumn, winter, and early spring.
Saturnia and Bagni San Filippo in July and August are extremely crowded.
Visit early morning or out of season for the experience Italians actually have.
Save this before your trip to Italy.
