- 2.5-hour underground Belgrade walking tour, with an expert guide
- Explore the historical caves, tunnels and bunkers hidden under Serbia's capital
- See the Roman relics under Belgrade Fortess, including a Roman Hall and water well
- Peep into a gunpowder warehouse built by the Austrians in their war against the Ottomans
- View a military bunker built during the rule of President Tito and the Cold War
- Learn about the various periods of history evidenced by the tunnels and caverns