List of tributaries of the Danube
The Danube is Europe's second-longest river. It starts in the Black Forest in Germany as two smaller rivers—the Brigach and the Breg—which join at Donaueschingen, and it is from here that it is known as the Danube, flowing generally eastwards for a distance of some , passing through several Central and Eastern European capitals, before emptying into the Black Sea via the Danube Delta in Romania.
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.