Eichhorn’s quasi-retrospective at Zurich’s Migros Museum highlights the artist’s complex contestations in simple, often invisible, form
Four artists pay tribute to the life and work of the cherished German dealer, who passed away at the end of last year
To celebrate frieze’s quarter century, the editors choose 25 key artworks: one for each year of the magazine’s existence
Chisenhale Gallery, London, UK
Galerie Barbara Weiss, Berlin, Germany
Kunsthalle Bern, Switzerland