Free sulphur hot springs at about 43 degrees Celsius flowing into travertine pools beside the Farma river, with a separate paid spa nearby.
Petriolo is a natural hot spring on the Farma river about 45 km from Siena. Sources describe free access to travertine pools of about 43 degrees Celsius, with a paid spa nearby. Roadside parking is limited and there are no facilities at the free section. Crowds peak on summer weekends. Because the status of free access can change, visitors should confirm locally.
| Distance | About 45 km southwest of Siena |
|---|---|
| Getting there | Car (about 1 hour from Siena via the SS223 Siena-Grosseto road and local roads); no practical direct public transport, so check at-bus.it for regional services. |
| Difficulty | easy |
| Best season | October-April for hot water; summer is crowded and warm |
| Address | Terme di Petriolo, 58045 Civitella Paganico GR / Monticiano SI, Italy |
Amenities
- Free natural travertine pools
- Paid spa with thermal pools nearby (entry reported at EUR 15, about $17)
- Roadside parking (limited)
Good to know
- Best for
- thermal bathing, budget travellers, autumn and winter visits
- Water
- Hot sulphur water around 43 degrees Celsius that cools away from the spring; the largest pool is called the Vascone. One travel account says some pools are fed through pipes.
- Facilities
- None at the free section: bring towel, water shoes and drinking water. The paid spa has facilities.
Location
Terme di Petriolo, 58045 Civitella Paganico GR / Monticiano SI, Italy
43.0617, 11.2717 View on map
Highlights
- Free hot sulphur pools beside a river
- Travertine formations
- Paid spa nearby with thermal pools
- Quiet in autumn and winter
Tips for visiting
- Visit on weekdays or off season to avoid crowds.
- Leave valuables at accommodation; there are no lockers at the free pools.
- Check the current status of free access and spa prices (EUR 15 reported, about $17) before travelling.
- Bring water shoes for slippery travertine.
When to visit
Weekdays in autumn and winter
Accessibility
Rough riverbank access and slippery rocks; not suitable for wheelchairs.
Frequently asked questions
Are the Petriolo pools free?
The riverside pools are described as free; a separate spa charges entry (about EUR 15, roughly $17, reported).
Are there changing rooms?
Not at the free section.