If you’re looking to bask on some breathtaking beaches, take an excursion to Isla de Vieques 8 miles off the main island. Vacationers come here to scuba and snorkel or simply to soak in the sunshine. It was formerly US Navy land but today is a wildlife refuge. Vieques is a magnet for ecotourists who prefer a laid-back, low-key, relatively undeveloped escape. Don’t miss the luminescent waters of Mosquito Bay.