In theory, most of the city halls in Europe can be visited free of charge during working hours, but I arrived late and it was sunset, so I didn't go in to see them. This square is not big, but the building is very material. One by one, the tips are dense. Dense phobia is still a bypass. It is said that this was built by the Dutch in the golden age. Belgium belonged to the Netherlands before it split up. Compared with the dense buildings, the dense crowds of people in the square make me mistake that I have returned to China.