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When in Berlin...
... don't forget to drop by Checkpoint Charlie for a passport stamp.
For posterity sake.
Checkpoint Charlie was the name given by the Western Allies to a crossing point between East Berlin and West Berlin during the Cold War. It was located at the junction of Friedrichstraße with Zimmerstraße and Mauerstraße (which coincidentally means 'Wall Street') in the Friedrichstadt neighborhood, which was divided by the Berlin Wall.
When in Berlin...
... don't forget to drop by Checkpoint Charlie for a passport stamp.
For posterity sake.
Checkpoint Charlie was the name given by the Western Allies to a crossing point between East Berlin and West Berlin during the Cold War. It was located at the junction of Friedrichstraße with Zimmerstraße and Mauerstraße (which coincidentally means 'Wall Street') in the Friedrichstadt neighborhood, which was divided by the Berlin Wall.