The Rheinturm Düsseldorf is a 240.5 metre high concrete telecommunication tower in Düsseldorf, Germany, capital of the federal state (Bundesland) of North Rhine-Westphalia. It was built from 1979 until 1981. The Rheinturm carries aerials for directional radio, FM and TV transmitters. It stands 174.5 meters, houses a revolving restaurant and an observation deck, at a height of 170 meters. It is the tallest building in Düsseldorf1.
The Rheinturm was inaugurated on December 1, 1981. It contains of 7,500 cubic meters of concrete and weighs 22,500 tons. Before October 15, 2004, when an aerial antenna for DVB-T was mounted, it was 234.2 meters high.
As a special attraction, there is a light sculpture on its shaft, which works as a clock. This sculpture was designed by Horst H. Baumann and is called Lichtzeitpegel (light time level). The light sculpture on the Rheinturm is the biggest digital clock in the world.