Potsdamer Platz has had more lives than most cities. In the 1920s it was the busiest intersection in continental Europe, a roaring crossroads of trams, cars and nightlife rivalled only by Alexanderplatz. Then came the bombs, then the Wall, and for nearly four decades it became a patch of wasteland sitting in the death strip, watched over by guards in towers with orders to shoot.

At its heart once stood Haus Vaterland, a six-storey pleasure palace with a Bavarian brewery, a Turkish café, a Wild West bar and hourly artificial thunderstorms complete with falling rain. It was demolished in the early 1950s. The sleek Sony Center now occupies much of the same ground.

VoiceMap's tours trace this extraordinary sequence of rise, erasure and reinvention, connecting the Wall's death strip to the first traffic light in continental Europe and the gleaming towers that replaced a no-man's-land.