Danube River

The Danube River is the second-longest river in Europe, flowing through ten countries from its source in the Black Forest of Germany to its mouth at the Black Sea. It passes through or forms part of the borders of Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania, Moldova, and Ukraine. The Danube is a vital transportation route, linking Central and Eastern Europe, and has played a significant role in the region's history, culture, and economy. It is also renowned for its scenic beauty, with picturesque landscapes along its banks and numerous historic cities and landmarks.