Looking for a playground

If you are in Charlottenburg-Wilmersdorf and you are looking for a very peaceful place to play with your children or to watch them playing, I recommend the small park from Mansfelder Strasse. It is very close to Fehrbellinerplatz U-Bahn, and opposite one of the buildings of Charlottenburg town hall. There are not always too many children, it's a lot of sand where they could play as at a real beach, plus a small ping-pong table and a basketball basket.