Belgrade rewards visitors who prioritize a compact mix of history and everyday city life. Belgrade Fortress at Kalemegdan sits above the confluence of the Sava and Danube rivers, its ramparts and surrounding Kalemegdan Park telling the story of a city rebuilt dozens of times over. From there, pedestrian-only Knez Mihailova Street leads straight into Republic Square, the natural gathering point for museums, cafes, and street performers. History lovers should add the Nikola Tesla Museum and National Museum of Serbia, while the Saint Sava Temple impresses with sheer scale. Together these picks fit easily into two or three days without backtracking across town.