The Rheinturm carries aerials for directional radio, FM and TV transmitters.

Before October 15, 2004, when an aerial antenna for DVB-T was mounted, it was 234.2 metres (768ft) tall.

As a special attraction, a light sculpture on its shaft 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 largest digital clock in the world.