It is 50 years since construction began on the wall that marked the demarcation between East and West.
Some bricks are all that is left of the Berlin Wall, laid in place on this day five decades ago.
Once complete, it would become one of the most notorious borders in the world – separating families and friends who had lived side by side all their lives.
In today’s Europe, a physical barrier like this would be unthinkable. Yet not so long ago, Berliners lived with it as a daily reality.
So how did it come about? And what was life like, exactly, in a divided city? Euronews travelled to Berlin to find out.