A striking feature of Münzenberg castle is that it has two tall defensive towers, a structure known as a bergfried (Thompson 2008). Such a tower is a typical feature of castles in the region, but there is usually only one, forming the strongest point of the castle. The bergfrieds at Münzenberg are both round, the taller one being 29 meters high.
The two bergfrieds stand at opposite ends of the inner ward (here called the Kernburg). The inner ward is completely surrounded by an outer ward with an outer curtain wall, providing defense in depth.