The Fortaleza de Elmina, also known as Elmina Castle, is a historic fortress located in Elmina, Ghana. Built by the Portuguese in 1482, it is one of the oldest European structures in sub-Saharan Africa. The fortress served as a key trading post for gold and later became a significant site in the transatlantic slave trade. The castle features thick stone walls and a strategic position overlooking the Atlantic Ocean. It was later captured by the Dutch in 1637 and remained under their control for over 200 years. Today, the Fortaleza de Elmina is a UNESCO World Heritage Site, attracting visitors interested in its rich history.