A journey from Alexanderplatz to Lichtenberger Brücke through the avenue in East Berlin: Karl-Marx-Allee in Berlin is an internationally significant architectural ensemble. Its significance for the history of Germany is just as great. And this avenue has accompanied me throughout my life. As a child, it was part of my route to school. My aunt Lotte lived on it. I was often in the Karl Marx bookshop. As a young filmmaker, I made my first long documentary about it. Thirty years later, I now cycle through the avenue to work every morning. My movement through the street is also a movement in time.