 The collection includes a single work each by Otto Dix, Lyonel Feininger, Alberto Giacometti, Paul Klee, Oskar Kokoschka and Oskar Schlemmer.Among the still lifes, the highlight is Christian Rohlfs.In the early 1990s the museum acquired over 1,000 works from the collection of the artist Siegfried Cremer, by artists including Marcel Duchamp, Joseph Beuys, Nam June Paik, Wolf Vostell, Günther Uecker and Jean Tinguely, strengthening the museum's coverage of the Fluxus, ZERO and "informal art" movements.