The Hermann and Margrit Rupf Collection represents an extremely significant contribution to the museum’s collection. The couple were the first private Swiss collectors to occupy themselves with abstract art and who collected it according to their personal criteria during its beginnings.

The Adolf Wölfli Foundation was setup by Elka Spoerri (1924-2002) in 1975. Since then the foundation takes care of the administration of the legacy of the “author, artist, draftsman, and composer" Adolf Wölfli (1864-1930). Its holdings enjoy the eager hospitality of the Kunstmuseum Bern.