Fodor's Expert Review Indian Springs Spa

Even before Sam Brannan constructed a spa on this site in the 1860s, the Wappo Indians built sweat lodges over its thermal geysers. Treatments include a Calistoga-classic, pure volcanic-ash mud bath followed by a mineral bath and  an infrared sauna, after which clients are wrapped in a flannel blanket for a 15-minute cool-down session or until called for a massage if they've booked one. Body scrubs—one with sea salt, the other with sugar—and facials are also popular. Before or following a treatment, guests unwind at the serene Buddha Pool, fed by one of the property's four geysers.