View from St. Stephen's Cathedral (Stephansdom) North Tower (Nordturm) to the Danube Tower (Donauturm).
The Vienna Donauturm (Danube Tower), opened in April 1964, is the tallest structure in Austria, at 252 metres (827 ft), and among the 75 tallest towers in the world. The tower is located near the north bank of the Danube River in the district of Donaustadt. The Donauturm was constructed during 1962–1964, as designed by Austrian architect Hannes Lintl, in preparation for the Viennese International Horticultural Show 1964.
Since then, it has become a part of the Viennese skyline and has become a popular lookout point and a tourist attraction.