Maxime Winz recommends:
The insanely extensive and impressive Rosengart Collection in Lucerne is worth a visit on rainy days (of which there can be quite a few in Lucerne after all) even for NON art lovers.
In the Museum Rosengart Collection in the heart of Lucerne you can marvel at magnificent works of art. Enjoy the collection with works by Pablo Picasso, Paul Klee and 23 other artists of Impressionism and Classic Modernism.
Prices
Entrance fee adult fot the Rosengart Collection: CHF 20
Tip: see Lucerne Museum Pass