Since the Middle Ages, this area has been used for agriculture - open and wide. Although it has been exposed to growing settlement pressure from all sides in recent decades, the undeveloped core has remained an area for agriculture, an oasis for recreational use and also a refuge for rare species. As part of the Green C, the Meßdorf field is protected as a landscape area, remains usable for agriculture and is preserved as a recreational area. This unusual old and lively "suburban field farm" is 150 hectares in size, the equivalent of around 300 soccer pitches. The tracks of the Voreifelbahn divide the area into two halves, which are connected by two bridges. Cereals, potatoes, vegetables, strawberries and turnips are grown here today as they were then. The Dransdorf stream flows to the west, and very rarely the shy and protected sand lizard can be seen in the bushes at the edges of the fields.

The fresh air from the foothills can "flow" through the Meßdorf field into Bonn city center - which is why the area is also known as a "fresh air corridor". At the beginning of the last century, two expressionist painters, August Macke and Hans Thuar, artistically captured the special features of this vast landscape in paintings. Today, Meßdorf Feld is a popular and lively leisure area for city dwellers. There is a lot of walking, jogging and cycling here, and in the fall the kites fly high.

As part of the Green C project, five landscape gates and a station with site-appropriate planting are being designed. A special information board also provides information about the Bonn-Rhein/Erft Biological Station, which has been established on the site of the former municipal nursery.