Lepenski Vir in the Đerdap Gorge is an archaeological site where the remains of Europe’s oldest prehistoric cultures can be found. Inside the futuristic museum and visitor center, or Lepenski Vir, there are the remains of buildings, sculptures, and skeletons from people who existed around 6000 BC. Your second stop, the Viminacium archaeological site, focuses on the considerably later Roman city of Viminacium. There are ruins of temples, streets, palaces, and amphitheatres from this ancient Roman city, that can be seen within this impressive archaeological park.