The famous astronomical clock is the most outstanding part of the city hall, which makes people forget the main body of the old city hall. It is said that people can buy tickets from the house on the left side of the astronomical clock and visit the inner part of the astronomical clock. In fact, it has entered the city hall from the moment it enters the door. It is on the towers of the city hall. From the corridor of the towers, it can overlook the beautiful scenery of the old city square. We paid too much attention to the astronomical clock and missed the mosaic murals "Salute Prague". When I went downstairs, I saw a room with four painted murals. I wondered if it was the auditorium of the city hall.