View from Leopoldsberg in SE direction. The heavily engineered Danube river is split in two parts: the overflow channel Neue Donau (left) is separated from the main channel by the Donauinsel, which was completed in 1988 and represents one of the most important recreation areas of the city. The Alte Donau, a former branch of the river, is shown on the left side. Donauturm, the urban development area Donau City, and the Vienna International Centre appear in the left centre of the image.