Danube
Classified as an international waterway, it originates in the town of Donaueschingen, in the Black Forest of Germany, at the confluence of the rivers Brigach and Breg. The Danube then flows southeast for about , passing through four capital cities (Vienna, Bratislava, Budapest and Belgrade) before emptying into the Black Sea via the Danube Delta in Romania and Ukraine.
Danube Valley Railway (Bavaria)
The Danube Valley Railway (; ) in Bavaria in southern Germany is the railway line that runs from Regensburg via Ingolstadt and Donauwörth to Ulm, just over the Bavarian border in Baden-Württemberg.