Sumac Spa, Pikaia Lodge, Santa Cruz, Galapagos Islands
Eco adventurers have a new reason to venture down to the Galápagos. Pikaia, a green, modern minimalist lair, sits smack in the middle of a giant-tortoise reserve. Guests can explore one of several volcanic craters, visit the nearby Charles Darwin Research Station, work up a sweat while mountain biking, go on snorkeling adventures, and, of course, get up close and personal with the ancient reptiles. End the day with a deep-tissue massage with tropical salves and oils. Courtesy of hotel.