Amanemu

Experience the curative powers of Amanemu. Its 21,500-square-foot spa centers around a mineral-rich onsen (there are two private pavilions, as well), fed by salt-infused springs from Ise-Shima National Park. Indeed, each of 28 lavish, low-slung villas has its own onsen, along with walls that open to tranquil Ago Bay or the surrounding forest. Practice yoga on the outdoor platform, witness a prayer ceremony at the Ise Grand Shrine or go fishing with a local angler and have the chef prepare fresh sashimi from your catch. The UNESCO-designated Kumano Kodo trails are worth the day trip.