A host of Belgrade's most popular attrations for visitors are concentrated on the rocky ridge of Kalemegdan, site of the original fortified city, which overlooks the confluence of the Sava and Danube rivers. The neighbourhood is now maintained as a park, containing the ancient fortress, zoo, art pavilion, observatory, planetarium, a Roman well, the Military Museum and some lovely walks.
Address: Accessed from the Knez Mihailova and Uzun Mirkova
Opening times: The museums and other attractions are generally open 10am-5pm. Museums in Belgrade are closed on Mondays.