The two-storey foyer forms the backbone of the slender and long building, which accommodates seminar rooms, the library and the cafeteria. Despite the difference in level of 3.50 m the foyer’s two storeys allow for an access at ground level from both of the flanking streets. Six lecture halls are shifted as a base beneath the accessible square clearly reducing the visible building mass. The underground lecture halls receive daylight from the sides via patios, cut into the square.