St. Thomas's oldest standing structure, this monument anchors the shopping district. It was built in 1672-80 and now has U.S. National Landmark status. The clock tower was added in the 19th century. This remarkable building has, over time, been used as a jail, governor's residence, town hall, courthouse, and church. Ft. Christian now houses The Virgin Islands Museum, where you can see exhibits on USVI history, natural history, and turn-of-the-20th-century furnishings. Local artists display their works monthly in the gallery. A gift shop sells local crafts, books, and other souvenirs. This is also the site of the Chamber of Commerce's Hospitality Lounge, where there are public rest rooms, brochures, and a place you can stash your luggage for some last-minute shopping on the way to the airport. COST: Free.