Europe's Oldest Observatory
At the top of the Round Tower you find the oldest functioning observatory in Europe. King Christian IV erected the tower to enable astronomers from the University of Copenhagen to gaze at the stars far above the lights and the smoke of the city. For centuries, it was the centre of Danish astronomy and the point of departure for meteorological observations and surveying.
The Observatory has undergone several changes throughout history. The present Observatory dates from 1929. The same year the refracting telescope arrived, allowing a magnification between 80 and 450 times. During winter, the Observatory is manned Tuesday and Wednesday evenings but you are always welcome to look inside and let your thoughts wander across the Universe.