Located in the Osu neighborhood of Accra, Ghana, along the coast of the Gulf of Guinea, Osu Castle—also known as Fort Christiansborg—is a historical structure deeply rooted in West Africa's colonial past and the Atlantic slave trade. Inscribed as a UNESCO World Heritage Site in 1979, the castle offers an incredible testimony to centuries of shifting power. Originally built as a small lodge and expanded into a substantial fort by Denmark–Norway in the 1660s, it later changed ownership among the Portuguese, Akwamu, British, and eventually post-independence Ghana.
It served as the capital of the Danish Gold Coast, held enslaved people, and later functioned as Ghana's seat of government before operations moved to Jubilee House. Because of various historical extensions, the castle features an unorthodox shape. Visually, the site encompasses extensive gardens maintained by thirty staff members, showcasing local and imported plants used for official receptions.
The complex enlarged over time to include store rooms, garrison quarters, platforms, bastions, and structural features rebuilt following an 1862 earthquake. Notable foreign dignitaries, including several U.S. presidents, have visited this oceanfront landmark. Note that Osu Castle is closed to walk-in visitors, but its solemn history remains central to Accra.
What to see at Osu Castle
- Inscribed as a UNESCO World Heritage Site in 1979
- Unorthodox shape resulting from historical additions and extensions
- Extensive gardens featuring a wide variety of local and imported plants
- Former residence of Ghana's first president, Kwame Nkrumah
Visiting tips
Please keep in mind that Osu Castle is closed to walk-in visitors.
How long: 1-2 hours · Best time: Morning
How to get there & what’s nearby
Osu Castle is easy to reach on Accra’s public transport. For where to stay, the weather and full itineraries, see our Accra travel guide.
See the full Accra travel guide for where to stay, the best time to visit and the top things to do.