The Tech Gate:
near UNO City - Vienna International Centre is one of the more impressive skyscrapers there, and prominently placed too: in direct sight of every passenger leaving the underground at Kaisermühlen station.
These two towers are the only ones in this district (also called here Kaisermühlen or, more informally, Donauplatte) which I really like, others are just okay and some can only be described as ugly.
More skyscrapers are sure to follow in the next years, and there's a danger they will ruin the skyline of Donaustadt. But wait and see, maybe all will be well ...