This photo was taken by myself while visiting Berlin. Next to the "Potsdamer Platz" you can find this mark on the ground exactly where the Berlin Wall went along from 1961-1989. It was kind of touching to make an easy step over a borderline that stopped people from fleeing from their country only 20 years ago.
It´s a good thing to see, that conflicts that seemed unsolveable were solved peacefully. We should keep in mind that we often can get rid of problems that seem insuperable by working together and that there are more possibilities than we usually think of.