During the time of the Berlin Wall (1961-89) there were three checkpoints where people from West Berlin could cross over to the East – Alpha, Bravo and Charlie. Charlie was the best known as it marked the link between the American and Russian zones.
A reconstruction of the checkpoint is now one of the most visited places in Berlin, along with the Brandenburg Gate, the Reichstag and the remains of the Wall.
This is a problem, because the Checkpoint is in the middle of a busy city street, with traffic trying to get past on both sides. Getting to see the Checkpoint devoid of crowds of people is not easy!