Built by the Portuguese in 1482, Elmina Castle is the oldest European structure in sub-Saharan Africa and a UNESCO World Heritage Site. This imposing fortress served as a major hub for the trans-Atlantic slave trade. Visitors can explore the dungeons, governor’s quarters, and the infamous “Door of No Return.” Elmina Castle stands as a haunting reminder of a dark chapter in history and offers educational tours focused on the castle’s role in the slave trade and Ghana’s colonial past.