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Fosso Bianco: Tuscany's Enchanting Thermal Springs

Discover the natural thermal hot springs of Fosso Bianco in Tuscany, with its unique calcium formations and therapeutic waters.

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Fosso Bianco, nestled near Bagni San Filippo in Tuscany, is a natural thermal park renowned for its stunning calcium formations and therapeutic hot springs. Its most famous feature is the 'Balena Bianca' (White Whale), a large, white calcium cascade that creates a surreal and relaxing bathing environment in the midst of a lush forest.

Plan your visit

A brief summary to Fosso bianco

Opening times, essentials, and a few local tips gathered into one calmer, easier-to-scan planning section.

Plan your visit

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Via S. Filippo, Bagni San Filippo, Province of Siena, 53023, IT
Eve
From Eve

Know before you go

Hi, I'm Eve. Here are a few practical things to know before exploring Fosso bianco.

Local know-how to help you travel smarter and make the most of every moment.

Arrive early to avoid crowds, especially during peak season.
Bring water and snacks, as there are limited facilities near the springs.
Wear appropriate footwear for the walk to the springs, as the path can be muddy and uneven.
Limit soaking time to 15-20 minutes at a time to avoid dehydration or overheating.
Bring a towel and extra water to rinse off after bathing in the mineral-rich waters.

Discover more about Fosso bianco

Fosso Bianco, or 'White Ditch,' is a captivating natural hot spring area located near the village of Bagni San Filippo in southern Tuscany. For centuries, visitors have enjoyed these springs for their reputed health benefits and unique landscape. The thermal waters, rich in minerals like calcium, magnesium, and sulfates, are believed to soothe muscles, improve circulation, and promote skin health. The highlight of Fosso Bianco is the 'Balena Bianca,' a massive, white calcium carbonate formation resembling a whale's back. This natural wonder is created by the continuous flow of thermal waters over the rock, depositing calcium and creating a stunning cascade. The contrast between the white formations and the surrounding green forest creates a striking visual. The thermal waters emerge from the ground at a temperature of approximately 48°C (118°F). As the water flows downstream, it cools, creating pools of varying temperatures. Visitors can relax in these natural pools, enjoying the warm water and the therapeutic mud, which is said to soften the skin. The area's history dates back to Roman times, with evidence suggesting that both Etruscans and Romans utilized the springs for their healing properties. In the Middle Ages and Renaissance, the springs were a favorite destination for the Medici family of Florence. Today, Fosso Bianco remains a popular destination for both locals and tourists seeking a unique and rejuvenating experience.

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    Getting There

    Car

    To reach Fosso Bianco by car, navigate to Bagni San Filippo via Fosso Bianco St. Paid parking is available on Via Fosso Bianco for €1.50 per hour. From the parking area, follow the 'Sentiero Fosso Bianco' trail, a short 5-10 minute walk to the hot springs.

    Public Transport

    The nearest train station to Bagni San Filippo is Chiusi-Chianciano Terme. From there, take a bus towards Santa Fiora and get off at the Bagni San Filippo stop, or take a taxi. Keep in mind that bus schedules may be infrequent. From the bus stop, walk along Via Fosso Bianco to reach the 'Sentiero Fosso Bianco' trail. A bus ticket from Chiusi-Chianciano Terme to Bagni San Filippo costs approximately €3-5. A taxi ride will cost significantly more, around €50-€70.

    Walking

    From the village of Bagni San Filippo, follow Via Fosso Bianco towards the 'Sentiero Fosso Bianco' trail. The trail is a short, downhill walk of approximately 5-10 minutes. The path can be uneven and muddy, so wear appropriate footwear. After crossing a small wooden bridge, you may encounter a small pay point where there is a €2 entry fee.

    A brief summary to Fosso bianco

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