Stadttor is a 72.55 metres (238 ft) tall building in Düsseldorf-Unterbilk

Düsseldorf-Unterbilk

Unterbilk is an urban borough in the 3rd District of the North Rhine-Westphalian state capital Düsseldorf. It is the seat of the state parliament of North Rhine-Westphalia, the tower Rheinturm and, together with the Düsseldorf harbour the centre of the media industry in...

, and a prominent landmark in Düsseldorf

Düsseldorf

Düsseldorf is the capital city of the German state of North Rhine-Westphalia and centre of the Rhine-Ruhr metropolitan region.Düsseldorf is an important international business and financial centre and renowned for its fashion and trade fairs. Located centrally within the European Megalopolis, the...

. The building was designed by Düsseldorf-based architecture firm Petzinka, Overdiek und Partner and completed in 1998. It marks the Southern entrance of Rheinufertunnel

Rheinufertunnel

The Rheinufer Tunnel is a road tunnel in Düsseldorf, Germany. The tunnel is part of the B1 German federal road. At long, it is the sixth longest inner city tunnel in Europe....

, which is also reason for its parallelogram

Parallelogram

In Euclidean geometry, a parallelogram is a convex quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure...

-shaped floor plan.

The building features a 15-story tall atrium and a double-facades, allowing natural ventilation even at high altitude floors. The total gross floor area is some 30.000 m². Since 1999, the Stadttor is seat of the state-chancellery of the Prime ministers of North Rhine-Westphalia.

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