Terme di Petriolo: Hot Springs in a Less-Explored Area of Tuscany

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Immersed in the Basso Merse Nature Reserve just a few kilometers from Siena, lies the spa village of Petriolo, a true paradise for those in search of a relaxing Tuscan holiday.

Natural Hot Springs

The Petriolo hot springs boast sulfurous waters that flow at a constant temperature of 43°C, known since Roman times for their beneficial properties. The waters are particularly suitable for treating dermatological, respiratory, and rheumatic conditions.

In addition to the renowned, privately-owned, Petriolo spa, the Farma River offers a completely free wellness oasis. Along this waterway, there is a large area where natural thermal pools have been created reminiscent of the well-known Saturnia.


The natural pools, carved into the travertine, offer a unique and free spa experience. On the river bank you can spread out your towel and enjoy the sun or, if you prefer, cool off in the shade of the surrounding trees. The shaded area is ideal for escaping the summer heat.

Remember that this spa area is completely immersed in nature. You will not find services such as changing rooms or toilets, but only the wild beauty of the surrounding landscape. Consider it an authentic experience for those who love to enjoy the outdoors in a truly natural context.


  • Wear your bathing suit and comfortable water shoes.
  • Bring food, drink, and all essentials since there are no nearby services.
  • Make sure to leave the area as you found it (or cleaner).

Hot Springs to Fit Everyone’s Needs

If you are looking for a more complete experience with services and all the comforts of a deluxe spa resort, you can opt for the modern paid spas located along the Farma River. Private spas offer a wide range of spa and wellness treatments, including:

  • Mud baths
  • Thermal baths
  • Oxygen and inhalation therapy
  • Massage
  • Physical therapy
  • Beauty Treatments

The Pools:

Inside the spa complex there are several swimming pools, both internal and external, where you can relax and enjoy the benefits of the thermal waters.

The Village of Bagni di Petriolo and the Surrounding Area

The village of Petriolo is a jewel of medieval architecture, with stone houses and suggestive alleys. In half an hour’s drive, you can reach the picturesque and historical Abbey of San Galgano, the real story of the sword in the stone.


In addition to San Galgano, you can also visit:

  • The medieval hamlet of Monticiano
  • The art city of Siena
  • The beautiful Val d’Orcia
  • The unique landscape of the Crete Senesi

Useful Info:

You can visit the official site of the private Terme di Petriolo at https://termepetriolo.it/

If you have the opportunity to visit the hot springs during the week rather than on the weekend, you will find a much more pleasant and less crowded environment because aside from tourists, the spa is also very popular with locals.


The Petriolo Hot Springs are the ideal choice for those seeking a relaxing holiday in a part of Tuscany that many tourists do not typically experience.

For your overnight stay, we suggest…

just 8km away