In the German capital there are still some green areas and parks. In order to make better monetary use of these unused areas as well, the term ed edge development (Randbebauung) was introduced.

As a result, the edges of parks are now being developed with residential and office buildings. The edges of the parks are receding. And in a few years these edges will also be built on, until finally there will be no green city lungs left.

In the centre of Berlin, the park is located at the Gleisdreieck, which is flanked by railway lines (see photos below). Here, the peripheral buildings are already being excavated. Next to a children's playground and a new building complex is the toilet house shown above.