Ross Reynolds speaks with Peter Schneider, author of "Berlin Now," about the vast changes there since the fall of the Berlin Wall 25 years ago this November.
The two spoke in Potsdamer Square, which in the 1920s was Berlin's Times Square.
But it was bombed to rubble during World War II.
In 1962 the Berlin Wall, dominated by a wide "kill zone," was built right down the middle of the square.
Following the fall of the wall in 1989, Potsdamer was reborn. It has become once again a Berlin landmark.