The absence of intermediate structural elements allows the accommodation on the ground floor of the auditorium with its 400 movable seats and, on the basement floor, the large exhibition gallery. Movable walls open up the auditorium onto the foyer to create a more versatile space. This design makes this main area into a public and the more sensible room of the bulding at the same time. It was a challange to achieve the insulation requirements which could deal with this versatility.