Designed specifically for Kunsthaus Graz by artist and designer Oliver Klimpel, the Cat-Tree was reminiscent of utopian architectures of the 1920s and allowed exhibiting and presenting in the entrance area of the Kunsthaus: a vertical space inhabited by other artworks, objects, stories and installations. The publication documents the different strategies of the total of eleven exhibitions that worked with the unusual display and talks about avant-garde ideas and radical concepts that served as precursors for Oliver Klimpel's modernist-looking sculpture.