Constructed in 1680, Fort Christian was built to defend the Danish settlement. Fort Christian is the oldest standing structure in the Virgin Islands; it has stood as a sentry overlooking the Charlotte Amalie Harbor for over 300 years. The imposing fort with walls 3 to 6 feet thick was built to defend the Danish settlement and the harbor from hostile marauders.This National Historic Landmark building is on St. Thomas and also served as the governor’s residence, a place of worship, a police station and now a museum.The fort is temporarily closed for renovations.