Grüne Mitte, Sankt Augustin

The Green C is a landscape project as part of the Regionale 2010 in the Cologne-Bonn conurbation. The name refers to the shape of the area from the initial phase of the project.

The area extends from the Ville across the Rhine to the Siegtal and from there to the Siebengebirge; a landscape area that connects the Rhineland Nature Park in the west with the Siebengebirge Nature Park in the east and consists of many different elements. It is part of a large-scale interconnected system of green belts and landscape corridors, which is to be developed as a cultural landscape network within the framework of the so-called "Masterplan Grün". The project is funded by the Federal Ministry of Transport, Building and Urban Affairs, by the state of North Rhine-Westphalia and by the European Union.

The area is framed by Bonn, Alfter and Bornheim on the left bank of the Rhine and Niederkassel, Troisdorf and Sankt Augustin on the right. The six cities and the Rhein-Sieg district have the common goal of protecting the landscape area in question, limiting the encroachment of settlement areas into the cultural landscape and safeguarding the surrounding open spaces.