Courtesy Mauna Lani

This charmingly rustic spa surrounds you in Big Island geology: nine outdoor treatment hales set amid shoulder-high lava flows, open-air saunas built of volcanic rocks, a Watsu pool in a (partly faux) lava cave. Treatments, some devised by a Hawaiian therapist who studied with some of the islands' most respected teachers, offer a symposium in native healing, from authentic lomilomi to Opu Huli, a traditional abdominal massage meant to ease digestive discomfort. — A.A.

800-367-2323, www.maunalani.com