Courtesy of Alder Thermae Spa Resort

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Adler Thermae Spa Resort, Siena, Italy

The mineral hot springs in Tuscany's Val d'Orcia have been embraced for their healing properties since the days of the Etruscans. Adler Thermae makes use of these pools, along with thermal mud and steam, in all their treatments.

Signature Treatment: The Argillae-Rasul bath, which incorporates body smoothing with mineral-rich mud, an herbal steam, and a purifying bath (for up to 4 people; 45 minutes, $40 per person).

39/0577-889-00; www.adler-thermae.comFrom the article

Top 15 Destination Spas

Adler Thermae Spa Resort, Siena, Italy

The mineral hot springs in Tuscany's Val d'Orcia have been embraced for their healing properties since the days of the Etruscans. Adler Thermae makes use of these pools, along with thermal mud and steam, in all their treatments.

Signature Treatment: The Argillae-Rasul bath, which incorporates body smoothing with mineral-rich mud, an herbal steam, and a purifying bath (for up to 4 people; 45 minutes, $40 per person).

39/0577-889-00; www.adler-thermae.comFrom the article

Courtesy of Alder Thermae Spa Resort

Top 15 Destination Spas

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