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.
Two high-speed elevators transport passengers to the tower's viewing platform at 150 metres (490 ft). Each lift, carrying up to 14 passengers, takes only 35 seconds to reach the observation platform. In strong winds, the elevators travel at only half speed because of the possible fluctuation of the tower: the movement of the elevator cable could be dangerous. By walking about 779 steps (775, according to architects Hannes Lintl),
the platform can also be reached on foot. The stairs are, however, usually only accessible during the annual Donauturm run, or in an emergency.
Two revolving restaurants (at a height of 161 and 169 metres, or 529 and 556 ft) offer a varied view over the Austrian capital and the Danube River below. It takes the platform either 26, 39 or 52 minutes to complete a full revolution. The restaurants were originally largely identical; however,
now the top is an 'upscale' restaurant (named "Donauwalzer") and the lower restaurant is a café (named "Panorama"). Even so, the menu and prices continue to differ little. The observation deck also bears a bungee-jumping site, with a platform projecting from the area.
It is used at times during the summer months.