Nestled on the jagged coast of the island of St. Thomas, this spacious beach boasts fine white sand and beautiful views of St. John and the offshore cays of the U.S. Virgin Islands. When the sea is calm, you can rent proper gear to go snorkeling among coral reefs and see colorful tropical fish. Otherwise, windsurfing in the waters of Saint John Bay is always a great option. Hit up the beachside restaurants and bars to refuel afterward. You can visit Sapphire Beach on your own, as part of a tour, or on a private boat charter. – Tripadvisor