Donau City, or Vienna DC, is a new part of Vienna's 22nd District Donaustadt, next to both the Reichsbrücke and the left bank of the Danube's 21.1 km new channel, Neue Donau.

Construction work for the first building on this site, the Andromeda Tower, started in 1996.
This tall building is called DC Tower 1 and is 220 metres high (250 metres including the antenna spire), which makes it the tallest skyscraper in Austria. Finished in 2014.

http://www.wikiwand.com/en/Donau_City