This light-filled art museum, built by Hans Leuzinger, is considered one of the most beautiful in Switzerland. The art museum is protected as a historic monument and was very prudently renovated by Cohen Sigl Architekten. We planned the replacement of the existing lighting in the skylight halls, in the side-light hall, in the basement as well as in the show depot. With these interventions, the quality of the artificial lighting could also be significantly improved in terms of protecting the building.