In contrast to the complexity of the brief for its debut project, the architectural challenge presented by Le Prisme was extremely contained.
The building is essentially a scaled-down Zénith, the multi-purpose auditorium — such as Bernard Tschumi’s buildings in Limoges and Rouen, and Foster & Partners’ soon-to-be-completed project in Saint Etienne — that nearly every major French city can now claim.
Le Prisme is designed to accommodate up to 4,500 people standing and 2,500 people sitting — about 60% of the capacity of the average Zénith. In pursuit of maximum flexibility, the 40m-wide by 60m-long, column-free space is essentially a generic black box environment.
The geometry is unwaveringly orthogonal. Seating is retractable and the stage can be dismantled. Articulated lorries can drive into the hall to unload stage equipment or a trade fair’s partitions and displays.