Spa Solage at Solage Calistoga Resort
With 14 rooms and more than 100 treatments ranging in a multitude of skin and nail rejuvenation, massages, and baths, as well as fitness and yoga classes, the spa at the Solage resort is one of the most immersive. Contemporary artwork of sculptures and paintings can be found throughout the grounds and different buildings, and a 130-foot pool is kept at body temperature. Massage treatments like shiatsu, Thai, and water are available alongside more traditional techniques. The 83-room and six suite resort offers complimentary bicycles to explore the area, and there's a contemporary restaurant called Solbar. Dogs are also welcomed.