Before visiting Berlin, it always reminded me of the movie Christiane F. I watched when I was a boy at school in the early 90s. I liked the movie, but I’m not a fan of those dark districts, and I was afraid that I would be frightened by that dark atmosphere. Stupid nightmares. The movie is so far from the real Berlin City of the twenty-first Century. Berlin is an aggressive, vibrant, and astonishing city.