Belgrade Planetarium, Planetarium in Lower Town of Belgrade Fortress, Serbia

The Belgrade Planetarium occupies a former Turkish hamam built between 1860 and 1867 in the Lower Town of Belgrade Fortress, near the medieval Eastern Gate. Inside the central halovat, a separate circular structure 8 m across holds the projector, and the dome vault above it serves as the screen. The hall seats 80.

The building was erected as a Turkish bath (hamam) between 1860 and 1867, when the Ottomans left the fortress. It served as a military bath during World War I and was nearly demolished by the 1944 explosion at the nearby Eastern Gate. Reconstruction by the city's monument protection institute ran from 1962 to 1964; after a planned lapidarium was scrapped, the Astronomical Society Ruđer Bošković installed its planetarium in 1967–1968.

The facility operates under the Astronomical Society Ruđer Bošković and presents educational programs about space and celestial objects to visitors of all ages. Regular shows and presentations help people explore the night sky and cosmic phenomena in an accessible way.

Visitors should plan ahead as group reservations are needed for visits and individual attendance at shows requires checking program schedules in advance. Operating hours and presentation times vary depending on the type of astronomical program being offered.

The projector, a small Zeiss ZKP-2, was bought at the 1966 Belgrade technology fair thanks to Josip Broz Tito, after members of the Ruđer Bošković society pushed for it. The hall holds 80 seats under an 8 m dome, and drawings of the Belgrade panorama from the 1960s are still kept there.