A sign which reads "25 years Fall of the Wall 2014" is pictured in front of sections at the East Side Gallery, the largest remaining part of the former Berlin Wall in Berlin, November 3, 2014.
A sign which reads "25 years Fall of the Wall 2014" is pictured in front of sections at the East Side Gallery, the largest remaining part of the former Berlin Wall in Berlin, November 3, 2014. Germany will celebrate the 25th anniversary of the fall of the wall on November 9. REUTERS/Fabrizio Bensch

It is the 25th anniversary of the Berlin Wall's fall in November. That solid wall of concrete had split Berlin from 1961 to 1989, and pushed up differences between the two big countries and their allies who were part of the Cold War too.

The Wall dividing the city fell on Nov. 9, 1989. It was an event that enthralled everyone and caused the Germans to celebrate. This is the Berlin Wall week to bring back its memories, according to NY Daily News.

There is no wall being put up again, of course. But there is a temporary wall of 8,000 helium balloons that are lit up from inside. They will rise along an 8-mile length on which the wall once stood, and it will remind us of the 25th anniversary of the Wall's end. For two days, the temporary installation, which is called the Lichtgrenze, will remind everyone of the heartwrenching separation in the city for 28 years.

At 11 p.m. on Nov. 9, the biodegradable balloons will be released one by one into the sky while the Berlin State Opera orchestra will play the "Ode to Joy" from Beethoven's Ninth Symphony. It will evoke feelings of the boundary's crumbling and the birth of new freedom and unification.

Check out some photographic images of the war scenes that Sean Gallup has photographed. You can compare them with the archive images of the wall. Contrasting photographs between then and now takes you through the years. You can check out some of the lovely, contrasting images in this link.

In astounding ways, the wall's fall is being celebrated throughout Berlin, as everyone recalls the fatal decades when there was a wall between hearts. The East German government put up the 12-foot "concrete monstrosity" with barbed wire on the top, dotted with 302 watchtowers and 20 bunkers, and with hundreds of alarms and ditches around it. There were armed soldiers and guard dogs everywhere. More than 5,000 escaped from the German Democratic Republic in the East to the freedom of the West. About 136 others died just attempting to, according to NY Daily News.

There were lots of museums today that show divided Berlin. The Palace of Tears in a former border-crossing station at Friedrichstrasse, where from 1962 to 1989, there were hundreds of thousands of East Germans who bid goodbye, is being showcased. In 2011, the tearful farewells were remembered and reopened.

The Allies invaded mainland Europe to free it from the Nazis during the second world war on June 6, 1944. Operation Overlord was the "largest seaborne invasion in military history," as 156,000 Allied troops swarmed over the beaches of France, according to The Guardian.