Indian Springs Resort and Spa
1712 Lincoln Ave., Calistoga
Soak away at one of Napa Valley's most popular resorts and one of California's original spas. Lodgings at Indian Springs Resort and Spa extend across 17 acres and include cottages, bungalows, and Mission Revival-style buildings. Indian Springs offers thermal mineral waters, mud baths, and special treatments so that you can enjoy a true mental and physical retreat.
Book a room at Indian Springs Resort and Spa
Orr Hot Springs Resort
13201 Orr Spring Rd., Ukiah
Take a day trip to the heart of the Mendocino Coastal Range at this clothing-optional rustic retreat. In these rolling hills, you'll find Orr Hot Springs Resort, a property with overnight accommodations including rooms, yurts, or cottages and a healthy and rejuvenating bathhouse for soaking. The mineral waters have calcium, potassium, boron, sulfur, and many other natural minerals. The water flows to the tubs directly from the earth at 106 degrees Fahrenheit. Guests can book a day pass for $50, which requires an advance reservation. Book four to six weeks in advance to ensure availability.
Sykes Hot Springs
Within the Ventana Wilderness, Big Sur
A favorite destination among hikers and campers, Sykes Hot Springs is a stone-lined natural pool next to the Big Sur River. It can hold about four adults and averages around 102 degrees Fahrenheit. The trek to the pool will probably tire you, unless you're an elite hiker. That makes a soak in this natural hot spring all the more glorious. What's also spectacular is that you'll be surrounded by redwood trees and the serenity of the forest.
Tassajara Hot Spring
39171 Tassajara Rd., Carmel Valley
Experience Japanese hot springs in the unspoiled Ventana Wilderness. A Zen monastery, Tassajara is managed by the San Francisco Zen Center and is open to guests and students from late April through September. In addition to the indoor and outdoor hot plunges, Tassajara provides a steam room, sundeck, and showers. You can also participate in daily meditation sessions, Buddhism workshops, and more. If you're searching for tranquility, this may be your best choice.