Museum of Contemporary Art, Belgrade

Ivanka Raspopović and Ivan Antić were both working on factories and infrastructure when they took the museum commission in 1960, and the building keeps the discipline of that work. It stands in Ušće park near the meeting of the Sava and the Danube, on the flat ground of New Belgrade, and consists of six square cells arranged so that the galleries spiral upward around a central hall in half-level steps, giving a single continuous route with no dead ends. Each cell is capped by a faceted marble crystal whose four sloping faces run up to a glass lantern, so that all the daylight in the museum arrives from above. Belgrade nicknamed it the crystal at the confluence. The city gave the two architects its October Prize on 20 October 1965, the same day the doors opened. Raspopović was still advising on the reconstruction that closed the building from 2007 to 2017; she died two years before it reopened.