Union Island, the southernmost island of the Grenadines, is nicknamed the ‘Tahiti of the West Indies’ due to its volcanic silhouette. Among the many restaurants and bars, Happy Island, a man-made island featuring a bar, sits in the middle of Clifton harbor and is a must-see. Mount Taboi, which at 999 feet above sea level, is the highest peak on Union Island. A key feature of the Union Island region is the Tobago Cays National Marine Park. The Tobago Cays are a group of small uninhabited islands surrounded by reefs, where snorkeling, scuba diving and swimming with sea turtles are all favorite pastimes.