The Spa at Solage is an award-winning, 20,000-square-foot wellness sanctuary located at Solage, an Auberge resort in Calistoga, California, at the northern tip of Napa Valley. The spa is celebrated for its signature Mudslide treatment — a modern reinvention of the iconic Calistoga mud bath — which features a mineral-enriched mud application, a private soak in geothermal mineral waters, and rest in a signature sound chair. The Bathhouse complex offers five distinct geothermal pools ranging from 60 to 104 degrees, an infrared sauna, and a eucalyptus steam room. Private Bathhouse cabanas, massage and facial treatment rooms, and a state-of-the-art fitness center round out an extraordinary wellness experience set among the vineyards and natural thermal energy of Calistoga.