Belgrade is a wonderful city on the banks of two rivers, the Danube and Sava. RTD Nautika offers panoramic sightseeing opportunities on several different tours, depending on what you're interested in and the time you have on your hands. The tours can last from just few hours to a few days, and can even include visits to other, nearby cities. A real treat for tourists is the night tour around Belgrade, when you get to see the party capital of Europe in all its glory.