A few minutes on foot from Sand in Taufers, near the Ahr, the Rein Valley waterfalls and a naturally formed swimming pool, stands a sports center, which is recognizable by the building's elongated, lightly curved roof. The interlocking of exterior and interior space defines the design. Light shines in from all sides through the glass panelling of the building, providing views of the surrounding area and of the outdoor pool which blends into the landscape. The terraces of the pool are reminiscent of the waterfalls. The interior rooms form a walkway between the areas and provide the required fixed points in the building that simultaneously offer stability next to the seemingly freely swaying roof. Few materials were used in the design: stainless steel basins, rough concrete for the walls, non-slip stone for the flooring, light acoustic ceilings, and the steel and glass facades which are very light in appearance.