On Vacation Guide Book Dusseldorf | Page 30

9 . T H E R H E I N T U R M STROMSTRASSE 20 The Rheinturm ( Rhine Tower ) is a prominent icon of Düsseldorf ’ s Rhine landscape . It is located on the edge of the southern city centre at the entrance to the Media Harbour , directly next to the North Rhine - Westphalia State Parliament building and the building of the Westdeutschen Rundfunk broadcasting company . The Rhine Tower ( construction period 1979 - 1982 , architect H . Deilmann ) is 240 . 5 metres tall and has a restaurant 172 . 5 metres up in the air , which revolves around its axis once per hour ( for technical reasons , the platform revolves in one direction from 1p . m . – 4 : 30p . m . and in the other direction from 6 : 00p . m . to 12a . m .; the restaurant remains static for the remaining time ). There is a self - service restaurant and a viewing platform from which you have breath - taking views over Düsseldorf : the Media Harbour , the Old Town , the Hofgarten ( Court Garden ), Königsallee and the Rhine with its family of bridges lie at the foot of the Rhine Tower ; if there is good weather , you can even see the Bergisches Land mountain range region and the city of Cologne . The function of the illuminating circular portholes of the Rhine Tower is unique worldwide : separated by air traffic control lights , 39 of its 62 portholes form a decimal clock at three different height intervals over the 160 - metre - long shaft of the tower . The 62 portholes are each equipped with twelve LEDs , which consist of a group of four red , four green and four blue LEDs . Different colours can be generated by alternating the extent to which certain LEDs are dimmed up .