Calistoga Spa Hot Springs, formerly known as Calistoga Hot Sulfur Springs is a geothermal spring system and resort located in the upper

Napa Valley Napa Valley is an American Viticultural Area (AVA) located in Napa County in California's Wine Country. It was established by the Bureau of Alcohol, Tobacco and Firearms (ATF) on January 27, 1981. Napa Valley is considered one of the premier ...

town of Calistoga, California. The resort has been continuously operated as a

hot spring A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by c ...

resort since the early 1900s.

History

The indigenous

Wappo The Wappo ( endonym: ''Micewal'') are an indigenous people of northern California. Their traditional homelands are in Napa Valley, the south shore of Clear Lake, Alexander Valley, and Russian River valley. They are distantly related to the Yu ...

civilization occupied the region for thousands of years and annually migrated to the upper valley to village near the exposed mineral pools found along the western ridge of the Mayacamas mountain range. Geothermal forces and tectonic activity elevate the temperature of the mineral water to 180 degrees Fahrenheit at the source. From 1965 through 1986 the resort property operated Calistoga's largest open to the public pool, the Roman Pool. Through use and age the pool fell into decline and was closed in 1985. Between 1965 and 1985 the number of guest rooms increased. In 1986 a new main spa building was constructed to replace the Roman along with a mud bath and mineral bath facility. Further expansion took place in 2014.

References

{{Coord, 38.57915, -122.57707, type:landmark_region:US-CA, display=title Spas Bathing Balneotherapy Hot springs of California Public baths in the United States