The "Light Frieze" of the new building for the Kunstmuseum Basel produces its effect through the symbiosis of stone and light. Designed to be an integral part of the architecture, it subtly enlivens the building's brick façade with words and graphic elements. The 3 m high frieze encircles the building at a height of 12 m. Its horizontal joints are cast in shadow by the incident daylight, yet can be precisely illuminated by white LEDs. For the viewer, a play of light and shadow emerges, which is fleeting and yet seems to be as solid as the masonry itself.