Where are the historical remains of the Berlin Wall?

In Moscow, a piece of the Berlin Wall is exhibited on the grounds of a German school. — dpa

The Berlin Wall, the most potent symbol of Cold War division of Germany, finally fell on Nov 9,1989. Small sections of it survive in parts of Berlin in Germany, preserved as memorials.

In the euphoria that followed its fall, bits of the monstrous concrete barrier were torn down, smashed up or sold off. Some of these historical remains are now scattered across the world.