Cornelia Parker, Untitled, 2012-2013. Wood found on the streets of Jerusalem, wire. Dimensions variable. On view at Frith Street Gallery, London through August 2

Donald Judd, Untitled (Ballantine 89-49), 1989. Douglas Fir plywood. Four units, each: 19 11/16 x 39 3/8 x 19 11/16 inches. On view at David Zwirner in London through September 19

Martí Anson, Catalan Pavilion. Anonymous Architect. On view at Palais de Tokyo in Paris through September 9

Johan Thurfjell, Noon, 2013. Magnifying glass, twigs, lamp, springs, wood, MDF, 140 x 58 x 54 cm. On view at Galerie Nordenhake in Stockholm through July 20