A renowned natural spa resort set in a Medici-era villa in the hills of San Casciano dei Bagni, south of Siena. The thermal mineral waters at 42°C feed the indoor and outdoor pools, and the world-class spa with treatments, Michelin-starred dining, and dramatic Val d'Orcia views make this a wellness destination of the first order.
Fonteverde Tuscany Natural Spa Resort — known officially as Fonteverde Lifestyle and Thermal Retreat — occupies a restored 17th-century Medici villa perched above the village of San Casciano dei Bagni in the southeastern corner of Tuscany's Siena Province, close to the borders of Lazio and Umbria. The site has been renowned for its thermal mineral springs since antiquity: excavations at the base of the hill have revealed substantial Roman bathing infrastructure, and the hot springs were used by Ferdinando I de' Medici, who commissioned the current villa in the early 17th century as a thermal retreat.
Today the property encompasses 78 rooms and suites distributed across the historic villa and later purpose-built wings, with categories ranging from Classic rooms with garden outlooks to Grand Deluxe suites with private terraces overlooking the Tuscan countryside and the volcanic hills of Lazio. Interiors draw on the region's architectural vocabulary: Tuscan terracotta, local travertine stone, warm ochre tones, and antique furnishings that recall the Medici heritage of the building.
The thermal spa is the defining feature and primary draw of the property. Natural mineral water at 42°C emerges from the earth and feeds a network of indoor and outdoor pools, hydromassage circuits, and therapeutic baths across a spa complex of approximately 2,500 square metres. Treatment rooms offer medical-grade thermal therapies, mud wraps using locally sourced clay, beauty treatments, and a full massage menu. A structured medical wellness programme is available for guests seeking multi-day therapeutic treatment plans developed by on-site medical staff.
The Michelin-starred Ristorante Ferdinando I draws on an outstanding local larder: Val d'Orcia truffles, Chianina beef, Pecorino di Pienza, and saffron from San Casciano dei Bagni, paired with an extensive Tuscan wine list. A Bistrò provides lighter dining. The surrounding countryside offers excellent day-trip destinations: Pienza is 25 km west, Montalcino 40 km northwest, and the Saturnia thermal waterfalls 35 km south.
Amenities
- thermal pools
- spa
- restaurant
- bar
- fitness center
- wifi
- beauty treatments
Location
Localita Terme, 53040 San Casciano dei Bagni SI, Italy
42.8711, 11.8812 View on map
Highlights
- Natural thermal mineral water at 42°C feeding a 2,500 sq-m indoor and outdoor pool and spa complex
- 17th-century Medici villa above San Casciano dei Bagni on a site used for thermal bathing since Roman antiquity
- Michelin-starred Ristorante Ferdinando I showcasing Val d'Orcia truffles, Chianina beef, and Pecorino di Pienza
- Structured multi-day medical wellness programmes designed by on-site medical professionals
- Strategic position near Pienza, Montalcino, and the Saturnia hot springs in southern Tuscany
Tips for visiting
- Book a Grand Deluxe suite with a private terrace for the most dramatic views over the Tuscan and Lazio countryside
- Arrange a medical wellness consultation before arrival so the team can prepare a personalized programme
- The thermal pools are busiest at weekends and in winter when thermal bathing peaks; arrive on a weekday for more space
- A car is recommended for visiting Pienza (25 km), Montalcino (40 km), and the Saturnia thermal waterfalls (35 km south)
- San Casciano dei Bagni village is a 10-minute walk from the resort and has an excellent weekly market
Accessibility
The resort has lift access between the main villa floors and offers accessible rooms with wider doorways and adapted bathrooms. The thermal pool complex includes accessible entry points for several pools. Guests with specific mobility requirements should contact the resort in advance to confirm which facilities are fully wheelchair-accessible.
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Frequently asked questions
Are the thermal pools at Fonteverde open to day visitors?
Day-use access to the thermal pools is available for non-staying guests. Advance booking is required; contact the resort directly for current day-use rates, available time slots, and any seasonal restrictions.
What temperature are the thermal pools?
Natural mineral water emerges at 42°C. The resort maintains its indoor and outdoor pools at varying temperatures between approximately 33°C and 42°C depending on the pool and the therapy type.
How far is Fonteverde from Siena and Florence?
San Casciano dei Bagni is approximately 95 km from Siena (about 1 hour 15 minutes by car), 170 km from Florence (around 1 hour 45 minutes), and 145 km from Rome (about 1 hour 30 minutes). A car is strongly recommended.
Is Fonteverde suitable for children?
The resort's primary focus is adult wellness. Children are welcomed, and pool access is available during designated family hours. Families should confirm current family policies and children's pool hours with the resort when booking.