Sunset sail: two words that conjure up an idyllic experience of mystical beauty. Discover St. Thomas's quieter side on an approximately two-hour excursion across Charlotte Amalie harbor. From the pier, you'll board the 65-foot "Castaway Girl" catamaran. As your captain casts off, enjoy a glass of champagne, rum or soda and a variety of snacks. Listen to the sounds of soft music as you sail past historic Hassel Island. Located on the western edge of the harbor, it was used in the 18th and 19th centuries to defend the busy port. Also within view is Water Island, the fourth-largest U.S. Virgin Island. Once a secret hiding spot for pirates, today it's the perfect island getaway. Sit back and relax as the sun slowly sets and the lights of Charlotte Amalie flicker across the hillside competing with the early evening stars-a signal that it's time to return to the harbor.