Live from Abu Dhabi Connect the World takes you on a journey across continents, investigating the stories that are changing our world.
The fall of the Berlin Wall on November 9, 1989 heralded the fall of communism in Europe and ultimately the end of the Cold War between the West and the Soviet Union.
[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/images/11/09/art.wall.afp.gi.jpg caption="Graffiti is painted on Berlin Wall on West Berlin side while East German and Soviet flags fly on the other side of the East Berlin no-mans-land spiked with anti-tanks traps."]
Overnight the world changed. Suddenly the people of eastern Europe were able to travel freely. Many of the former countries of the Soviet bloc eventually joined the European Union and Nato, something that would have been unimaginable before the Wall fell.
While all this has meant the threat of imminent nuclear war in Europe is over, many remain nostalgic for the strict certainties of the old regimes, when a job for life was common despite economic deprivation. Reunification of Germany has also proved to be easier said than done while many point to resurgent nationalism in the former Soviet bloc as a worrying trend.
We want you to share your memories and to hear your comments. Tell us where you were when the Wall fell. Do you think the world is a better place now? How has it changed and have lessons been learned? We will try to use as many comments as possible on tonight's Connect the World show.