Danube River

The Danube is Europe's second longest river, after the Volga. It is located in Central and Eastern Europe. The Danube was once a long-standing frontier of the Roman Empire, and today flows through 10 countries, more than any other river in the world.

The Danube River is the second longest river in Europe, flowing 1,785 miles from Germany to Ukraine into the Black Sea. The Danube River is a major water source in Europe and is Eastern Europe's chief source.