The architectural concept was designed to represent a gradual scaling, through a grand staircase set into the slope. The superimposition of platforms makes it possible to create different types of staircases going up or down, with different widths of steps, belvedere-like projections, or recesses. Visitors can follow their own pace: slow down, speed up, pause, stop. This configuration enables, much like the scenography of the permanent exhibition, to symbolically evoke the stages of the European construction.