Die Linie: Heidi Horten Collection

Klee is joined by Kandinsky, Klimt, Duchamp, Pollock, Warhol and more to investigate the most ubiquitous feature in art: the line

Starting with Paul Klee's metaphor of a line embarking on an "impressive journey" across the page, Die Linie traces the most ubiquitous building block of composition through works by dozens of artists, from Antony Gormley to Keith Haring.