Yulin Square (also known as "Gendarmerie Square") is one of the most beautiful squares in Europe and a must-visit place for tourists. The square is surrounded by German cathedrals, French cathedrals and concert halls. It is beautiful, harmonious and lingering. The day we arrived was the day before Ascension Day and Father's Day, and the square was setting up a stage for the next day's activities. We visited the German cathedral, the French cathedral and the Berlin Concert Hall. The concert hall has performances, such as rehearsals, which can be seen through the glass outside the door. The concert hall is luxurious, but can not take photos. The buildings and sculptures of the square are beautiful and delicate.