Introduction to the main building: The main building is the hub of the University of Vienna. It consists of two symmetrical teaching buildings. The basement is a majestic auditorium. The center of the second floor is the celebration auditorium. One side is a conference room, and the other side is the president's office and other administrative agencies. . The front of the main building is a masterpiece by 11 master sculptors. In the center is a courtyard with an area of ​​about 3,300 square meters. In the courtyard stands a huge statue fountain of Castelia (goddess of mountains, forests and water), symbolizing the endless eruption of the source of wisdom.