Interrogating the City - Investigating with Your Smartphone: An Audio Walk Through the History of the Nazi Era in Steglitz. Are you familiar with the Steglitz-Zehlendorf district but not its history during the Nazi period? Do you want to learn about Berlin's history off the beaten path? Join us for a walk along both well-known and hidden historical sites. You can participate comfortably from home or on the go. Alternatively, you can explore some or all of our marked locations while strolling through Steglitz-Zehlendorf. The starting point is Hermann-Ehlers-Platz at the Steglitz Kreisel.