On the block’s street was a small English-language theatre and a basement club called Mandingo, where middle-aged, presumably divorced, German women go to pick up African boyfriends. To the right of the club is the entrance to the former Tempelhof airport with several giant Nazi eagles with the swastikas chipped off. Another nearby police building is peppered with bullet holes from 1945. Further down the road is the Schwerbelastungskörper (heavy load-bearing body), a massive piece of concrete put there by Albert Speer to test if the Berlin soil could support Hitler’s planned triumphal arch. If you come back on yourself...