This park's main draw is the bear pit where bears, a symbol of Berlin, used to be kept. Even though the pit is now empty you can still stroll through the park and see other interesting attractions, such as an open-air museum or a memorial.
Wikipedia https://en.wikipedia.org/wiki/Köllnischer_Park
Address 53 Wallstraße, Berlin 10179, Germany
Coordinates 52°30'46.974" N 13°24'51.755" E