Colonius, TV-Tower

The Colonius was built in 1981, and by an enlarging exchange of the pinnacle in the 90's it reached a height of 266 meters. With this it's the highest TV tower in NRW.
In 166 meters there is a 3-storey-construction, from which one level was established once as cafeteria with restaurant, reachable by elevator. Unluckily there is no leaseholder since 1994.