Designed by Eyvind Finsen, this was the first full-sized planetarium in Africa. Opened in 1960, it became a beacon of astronomical education, attracting tens of thousands of learners annually. By 2024, the old analogue Zeiss Mk III Star projector was replaced by high-resolution digital projectors and an upgraded sound system. The Colosseum Heritage Award went to Kate Otten Architects for the transformation of the Johannesburg Planetarium into the Wits Anglo American Digital Dome which opened on 12 November 2024.