Fort Frederik, also known as Frederiksfort, is a U.S. National Historic Landmark in Frederiksted, United States Virgin Islands. It was built between 1752 and 1760 by Denmark-Norway to defend the economic interests of the natural deep water port of Frederiksted and to ward off pirates. It has red and white painted walls, making it quite different then yellow and white of Fort Christiansværn on the other side of the island. It is located at the north end of Frederiksted, in St. Croix, south of the junction of Mahogany Road and VI 631. It should not be confused with Frederiks Fort, Fortberg Hill, on St. John, which is also listed on the National Register of Historic Places.
According to Westergaard, "It was soon found that a customs house was not sufficient, but that cannon must be provided, and placed as to command the roads where the ships lay anchored.
Address Lagoon St, Frederiksted, St Croix, U.S. Virgin Islands
Coordinates 17°42'54.867" N -64°53'0.394" E