Deer ponds and elector ponds are part of the villa lakes. The villa lakes are remnants of the opencast mining that was previously operated in the Ville. These remaining holes …
The Rehsprungmaar is also called Königsmaar - and has nothing to do with the Eifler Maaren, because it is not of volcanic origin. But what it is: idyllically situated. Especially …
The Katzenlochbachtal is a biotope in the nature reserve "Kottenforst", which extends into the southwest of Bonn. More about it can be found at de.wikipedia.org/wiki/Katzenlochbachtal_(Bonn)