Potsdam is a city rightly famous for its parks and palaces. I have visited all a number of times, as well as the Glienicker Brücke and the Russian and Dutch quarters.
I am now looking for alternative, perhaps less well known, points of interest in Brandenburg's capital city. I enjoy exploring World War II and Cold War history and impressive architecture and landscapes (such as parks or gardens). Also, any museums of any kind which may be notable.
I thank you in advance for any recommendations.