Next to Hamburg's City Hall is a special kind of art museum: The Bucerius Kunst Forum does not have its own collection. It hosts temporary exhibits of loaned artworks and thus requires completely flexible lighting. The museum was advised for many years by Harry Mayer on all aspects involving light. He wished that the special spotlights be retained in the new rooms. So we integrated spots into recessed light channels alongside the luminous ceiling panels. We designed the light channels to have full access to the spotlights so that they can be optimally adjusted. A specially designed extruded aluminum sheath integrates the mounting positions for the luminous ceiling panels making it possible to achieve very fine and precise details. A 3-D spatial analysis has found that it is possible to perfectly illuminate every artform and arrangement.