Berlin had a very unstable history. It was the capital of all the countries founded on it’s lands. These countries were Margraviate of Brandenburg, Kingdom of Prussia, German Empire, Free State of Prussia, Weimar Republic, Nazi Germany and lastly Germany.
I think if Berlin could talk it would express the bad historical events that happened on it’s lands. Probably it would wish those events didn’t happen. I think the worst event was the collapse of the Nazi Germany. But before, it had already suffered because of WW2 and greed of 3rd Reich’s Emporer. Berlin was raided by Allied Force’s air forces 363 times. After the collapse of Nazi Germany, Deutschland split up between Alied forces and USSR. It took 51 years to reunify. In that 51 years of time Berlin experienced lots of crimes. The People of Berlin suffered too much because of the crimes against humanity. They were stuck in East Berlin because of The Berlin Wall. Berlin Wall was built for holding the People which live in the East Germany to go West Germany.
So the worst events happened to Berlin was between 1938-1990. But Berlin re-built itself very quickly and it is still the one of the most developed cities around the whole globe. After this much of destruction it is praiseworthy that Berlin’s people worked hard for their land.