The stone gate tower, picturesquely situated on a branch of the Havel, is a late medieval fortified tower. Today it houses an exhibition on Havel shipping and the city's history. It is the oldest museum location in Brandenburg an der Havel. The Historical Society exhibited its collection here from 1887 to 1923.

Since 1995, part of the Brandenburg an der Havel City Museum has moved back into the five-storey tower after extensive renovation. The stone gate tower is the only one of the four remaining fortified towers in the city that is accessible.

Accessibility: Unfortunately, the Stone Gate Tower is not barrier-free.