The sixteen ton world clock was opened to the public in 1969, shortly before the twentieth anniversary of the German Democratic Republic, along with the Berlin TV Tower(seen in the background). The erection of the clock was part of a larger plan to expand and reorganize Alexanderplatz as a whole. At the end of the renovations, the public square was four times larger than it was at the end of the World War II.

It was intended to be both a symbol of Communist power and of Berlin. It remains the latter today, as it is easily visible throughout the central and some suburban districts of Berlin. With its height of 368 metres (including antenna) it is the tallest structure in Germany, and the second-tallest structure in the European Union.