Stadttor

Stadttor is a 20-storey 84m skyscraper in Unterbilk neighborhood of Düsseldorf, Germany. The building was designed by Düsseldorf-based architecture firm Petzinka, Overdiek und Partner and completed in 1998. It marks the Southern entrance of Rheinufertunnel, which is also reason for its parallelogram-shaped floor plan.The building features a 15-story atrium and a double-facades, allowing natural ventilation even on higher elevation floors. The total gross floor area is some 30000m2. Since 1999, the Stadttor is seat of the state-chancellery of the Prime ministers of North Rhine-Westphalia.