A recently renovated canon tower in Kalemegdan built around 1460. Originally built to defend the city against the Turks, but it was actually turned into a Turkish prison later.
Worth visiting for its interesting exhibitions on history. You can learn more about how the tower worked as a part of the city defense system and as a prison. There's also an exhibition about the Greek revolutionary Rigas Velestinlis who was held prisoner here.
Wed - Sun: 11 am - 7 pm
General: 200 RSD
Reduced: 100 RSD
Wikipedia https://en.wikipedia.org/wiki/Belgrade_Fortress
Official website http://www.beogradskatvrdjava.co.rs/?lang=en
Email office@beogradskatvrdjava.co.rs
Phone +381 11 26 20 685
Address Bulevar Vojvode Bojovica, Belgrade, Serbia
Coordinates 44°49'38.308" N 20°26'52.209" E