The fall of the Berlin Wall in November 1989 was the decisive moment in a revolution which swept through central and eastern Europe, bringing decades of Communist rule to an abrupt halt and paving the way for the end of the Cold War and German reunification.
20 years on, CNN wants your help marking those momentous events.
Dig into your photo album, show us your saved piece of the Berlin Wall, or simple share your memories on camera and be a part of CNN.com's virtual Berlin Wall.

