Over the following years the barbed wire and mesh barrier that was constructed overnight was gradually replaced with a virtually impregnable ring of reinforced concrete that ran 155km around West Berlin.

On the 26th June 1963 American President John F. Kennedy declared US support for West Berlin with the phrase, “Ich bin ein Berliner” – I am a Berliner – 22 months after the Soviet-supported DDR, more commonly known as East Germany, built the Berlin Wall.

In the evening of the 9th November 1989, the East German government opened the Berlin Wall after central committee spokesman Guenter Schabowski mistakenly announced that GDR citizens could cross into West Berlin with immediate effect.