What´s in a name?
There used to be three military checkpoints to pass when travelling from West to East in Berlin; A, B and C. In aviation terms these were known as Checkpoint Alpha, Checkpoint Bravo, and Checkpoint Charlie.
Checkpoint Charlie was the most famous; it divided Berlin between the East and the West and was used by diplomats, military personnel and foreigners. There were a lot of spectacular attempted escapes which took place here, some of which failed in a very dramatic way.
The Mauermuseum next door offers you a lot of information about the history of Checkpoint Charlie and the wall in general. It’s well worth a visit.