Heinz Mack

Heinz Mack

David Ertl/Kunst und Ausstellungshalle der Bundesrepublik Deutschland via Bloomberg

Heinz Mack at the Bonn museum, which is showing a retrospective of the artist's work in honor of his 80th birthday. Mack, together with Otto Piene, founded the "Zero" art movement aimed at finding a new starting-point after World War II.