"There are few destination spas as singular as this 62-suite hotel, built into an 800-year-old lava field on the southwest side of Iceland’s famous lagoon. It’s an otherworldly place to spend a few days, kicking back in the Scandi-chic guestrooms, soaking in the thermal hot springs, and indulging in a seven-course chef’s tasting menu at the lagoon-level restaurant. You and your partner will feel weightless as you float in the mineral-rich waters, looking out at the surreal moss-fringed landscape. If you’re lucky, the Northern Lights may even dance across the sky."