Step into history as we unveil a curated selection of rare and evocative images of Osu Castle, also known as Fort Christiansborg, during its time as a colonial stronghold on the Gold Coast. Nestled on the shores of Accra, this iconic fortress has witnessed centuries of transformation — from its origins as a Danish trading post in the 17th century to its pivotal role under British colonial rule.
Built in 1661 by Denmark-Norway after purchasing the site from the local ruler Okaikoi, Osu Castle became the capital of the Danish Gold Coast. It was a hub for trade — including the tragic transatlantic slave trade — and later served as the seat of British colonial administration.
Throughout its history, the Castle changed hands between European powers and local rulers, including the Akwamu. It stood as a symbol of colonial authority, its whitewashed walls overlooking the Gulf of Guinea. The Castle’s image is so iconic that it appears on the Ghana Coat of Arms and national currency.

Entrance at Osu Castle

Old Osu Castle postcard 1904 (Collection by Remo Kurka)

"Government House" Old Osu Castle postcard 1920s (Collection by Remo Kurka)

Christianborg Castle Old Osu Castle and lagoon postcard 1890s (Collection by Remo Kurka)

"Officers House" near Old Osu Castle postcard 1920s (Collection by Remo Kurka)

Old Osu Castle postcard 1930s (Collection by Remo Kurka)

Old Osu Castle postcard 1910s (Collection by Remo Kurka)