If the glitz, glamour, and tourist traps of the Las Vegas Strip aren't your thing, and you're after a more natural shimmer, then a paddle out to experience the Emerald Cave in Arizona is a must.

These luxe havens offer the most pampering spa treatments when you need that break from the Strip. The 50,000-square-foot Lapis Spa at Fontainebleau Las Vegas features snow showers, a salt mist ...