On Ummahat Island off Saudi Arabia's Red Sea coast, The St. Regis Red Sea Resort is reached by seaplane or boat from the mainland. Its 90 villas are divided between beachfront Dune Villas and spiral-shaped overwater Coral Villas, with one to four bedrooms and a private pool in every unit. Interiors take colours and textures from the surrounding desert, sea and sky, while broad decks extend the living space outdoors. Several restaurants, a spa, children's club and fitness centre accompany the two shared outdoor pools. Kayaking, sailing, snorkelling and diving are available in the surrounding island waters.