Ussher Fort

Ussher Fort is a fort in Accra, Ghana. It was built by the Dutch in 1649 as Fort Crèvecœur, and is two days' march from Elmina and to the east of Accra on a rocky point between two lagoons. It was one of three forts that Europeans built in the region during the middle of the 17th century. Fort Crèvecœur was part of the Dutch Gold Coast. The Anglo-Dutch Gold Coast Treaty, which defined areas of influence on the Gold Coast, transferred it to the British in 1868. Because of its significance in the history of European colonial trade and exploitation in Africa, the fort was inscribed on the UNESCO World Heritage List in 1979.

Source: Wikipedia