The Danish ruled St Croix for almost 200 years before selling it to the United States in 1917. The Christiansted National Historic District includes five historic structures dating to the Danish colonial period that present and interpret the Danish way of life during the era, including the economy and trade, slavery, military and naval defense, ethnic diversity, architecture, and colonial administration.
Fort Frederick is an 18th-century Danish military base built to defend the island from other European navies and pirate attacks. It’s also the place where in 1848 the island’s governor general Peter Von Frederik read the proclamation that abolished slavery. It now houses a museum and art gallery.