Watching a Phoenix sunset may be the most tranquil experience in Arizona, although receiving a Phoenix massage is another serious contender. The best spas in Phoenix draw on their immediate setting whenever possible, incorporating desert plants and minerals into their bodywork treatments. Therapists may use everything from indigenous herbs to turquoise gemstones as they soothe tense muscles. Phoenix spas occasionally embrace ancient Native American treatments, as well. At Aji Spa at Sheraton Wild Horse Pass Resort, for example, massage therapists use techniques passed down by generations of Pima healers to provide physical relaxation and spiritual healing.