The Wien is a river that flows through the capital of Austria, Vienna. The river Wien is 34 kilometres long, of which 15 km are within the city. Its drainage basin covers an area of 221 km², both in the city and in the neighbouring Vienna Woods. Its source lies in the western Vienna Woods near Rekawinkel and its mouth at the eastern end of the city centre o…The Wien is a river that flows through the capital of Austria, Vienna. The river Wien is 34 kilometres long, of which 15 km are within the city. Its drainage basin covers an area of 221 km², both in the city and in the neighbouring Vienna Woods. Its source lies in the western Vienna Woods near Rekawinkel and its mouth at the eastern end of the city centre of Vienna, next to the Urania, where it flows into the Donaukanal, a branch of the Danube.