We stand on the square of Babel. This square is also called the Royal Opera Square. The Opera is a national day and is the first in Europe to be built to serve the common people or the middle class. The opera building was built during the days of Frederick the Great. According to which the German king in order to allow the common people to enter the opera building was sufficient to fulfill two conditions: payment and clothing. The issue of clothing and hygiene was very important but not always clear, especially among the commoners. The building with the large green dome on the corner of the square is the church of all religions. It is like the Roman Pantheon. Frederick the Great thought it would be nice if all religions were together in one place. There were many opponents of this idea and Frederick the Great was forced to reject the original idea and declared the church a Catholic entrance because there were a minority in Berlin at the time. Frederick the Great greatly appreciated the value of reading the books. He advocated education and made sure in the 18th century that people read a lot and moved the Royal Library here to the Humboldt University building. Here too he kept both conditions: payment and clothing. Translated with Google Translate