Surrounding the fortress is the vast Kalemegdan Park. This large public park has lots of paths weaving through it and is always lively with people catching up on park benches or just strolling around. Just on the outside of the fortress you’ll find the Military Museum, it’s hard to miss with its tanks and heavy artillery around its walls. Further off in the park, places that may hold more appeal for families, include the Amusement Park and Belgrade Zoo.