Belgrade is the capital and largest city of Serbia, located at the confluence of the River Sava and Danube. It's one of the oldest cities in Europe with a history that dates back to pre-Roman times. Here are top 6 things to do: 1 .Explore Kalemegdan Fortress Kalemegdan is a historic fortress and park located in Belgrade, Serbia. It is one of the city's most significant landmarks, offering a blend of history, culture and natural beauty. The fortress has a long history, dating back to the 1st century AD when it was built by the Romans. Over the centuries, it has been destroyed and rebuilt numerous times, reflecting the various empires and cultures that have controlled the region, including the Byzantine, Ottoman, and Austro-Hungarian empires. Kalemegdan Park surrounds the fortress and is the largest park in Belgrade. It offers a serene environment with walking paths, gardens, statues, and panoramic views of the confluence of the Sava and Danube rivers. Within the complex, th...