The TV tower in Alexandria Square is Berlin's coordinate; it's also my coordinate in Berlin. Three times I came to Berlin and two times I stayed in a hotel near the TV tower. For the first time, I drove in Berlin. After taking the car, I would not play with the foreign navigation of the car. I drove around the city, looking for the traces of the TV tower, and finally I drove back to the hotel. Several times I set out from under the TV Tower and walked across the Bodhi Tree Street to the Brandenburg Gate. So I know Berlin, probably between the Brandenburg Gate and the TV Tower. Besides, we can't ignore it if we don't reach the top. So one sunny afternoon, a man came to climb the tower. I seem to like the feeling of climbing high and overlooking a city. From this point of view, the height of all cities is worth climbing, regardless of whether the tower itself is beautiful. The same is true of the Berlin Tower. Look at the city from a high altitude, see its overall color, look for the scenic spots you have visited, compare the distances between them, understand the layout of the city, and sometimes see the sunlight shining through the dark clouds in the city, see through the margin of the city, and experience the feeling of the sky. Many pleasures, but not enough. Look at the picture.