The latest addition to the renowned 600-acre Anse Chastenet resort on Saint Lucia, Jade Mountain is simply stunning, a treetop paradise overlooking the Caribbean Sea and the Piton Mountains, a UNESCO World Heritage Site. Completely designed by the architect-owner, Jade Mountain has 24 infinity pool suites (and five jacuzzi suites) that open directly to the ocean. The private dining club is headed by a James Beard Award-winning chef, and guests are able to take in dining, bar, beach, and spa amenities at the main resort (there's also a private full-service spa reserved for JM guests). Easily one of the most stunning stays in the world. Guests must be 15 or older. [From $1,025 a night;]