World Clock

Urania / World Clock, Alexanderplatz, Berlin
The world time clock on Alexanderplatz in Berlin's Mitte district (also: Urania world time clock) is a clock system in a structural unit with a symbolic representation of the world. On its metal rotunda it contains the names of 146 places as well as an additional entry for the date line. Since it was set up in 1969, the ten meter high world clock has been a popular meeting place for Berliners and tourists in the German capital. Since July 2015, the World Clock has been a listed building.
Text/Source: Wikipedia
de.wikipedia.org/wiki/Weltzeituhr_(Alexanderplatz)

This famous world clock from the 1960s (the 20th anniversary of the GDR) shows the time in the 24 main time zones of the world for 148 listed cities and is now a listed monument.

The World Clock on the Alex is a very popular meeting place for everyone. It was handed over almost at the same time with the television tower.