Photograph
1887Pavilion of Astrograph
Zeiss Astrograph dome. Instrument: Zeiss Astrograph 160/800 mm. Built in 1932.
From Wikimedia Commons (Art Deco › Art Deco by country › Art Deco architecture by country › Art Deco buildings by country › Art Deco buildings in Serbia › Belgrade observatory). By Свифт/Svift. CC BY-SA 3.0.