The circular ditched enclosure of Goseck is the earliest archaeological evidence for systematic observations of the heavens. The imposing monument consists of a nearly circular ditch of approximately 70 m in diameter, which is surrounded by an embankment. Inside the circle tree trunks more than three metres high are set into the ground, forming two palisade rings. Thereby the view into the interior is prevented and new horizons are created from within. Through the embankment, ditch, and palisade rings three gaps are aligned towards north, south-east, and south-west.

On the day of the winter solstice, the longest night of the year, you can observe how the sun sets in the south-west gate of the circular ditched enclosure. The sun rises again in the south-east gate on the following morning. It is believed that the circular ditched enclosure served as a place for meetings, cult, and court activities.

The solar observatory was completely excavated and reconstructed exactly on the original location. Just as 7,000 years ago, when the monument was constructed by Stone Age farmers, the course of the sun can be observed once again from within. In addition to the visual effect of the Stone Age sanctuary, the special acoustics within the enclosure leave a lasting impression on visitors.