Besides classical modernism, the mumok collection focuses on pop art, nouveau réalisme, Fluxus, and conceptual art, post minimal and arte povera, all standing for the avant-gardes of the 1960s and 1970s.

The pop art that Peter and Irene Ludwig purchased includes Claes Oldenburg’s Mouse Museum, Andy Warhol’s Orange Car Crash, and Robert Indiana’s Love Rising - Black and White Love. For Martin Luther King, and works by Jasper Johns, Roy Lichtenstein, John Chamberlain, and Tom Wesselman, all today seen as key works of American pop art.

Alongside American pop art, the Peter and Irene Ludwig Collection is characterized by key works by Hanne Darboven, Gerhard Richter, Robert Smithson, Bernd and Hilla Becher, Pablo Picasso, Joseph Beuys, and Richard Hamilton.