The lobby behind the central entrance and right below the central tower is what is called the central hall. The hall has a stairwell that reaches from the 2nd floor to the 6th floor and a ceiling that is 32.62 meters high. The ceiling is made of stained glass and has four oil paintings of Japan's four seasons in the four corners of the ceiling. The paintings each depict Mount Yoshino in the spring, Lake Towada in the summer, Okunikko in the fall, and the Japan Alps in the winter. They were drawn not by famous artists but by art students.