donald judd is on one of our favourite contemporary artists of alltime. his geometric explorations of volume, space, and colour are meditative masterpieces that often exude an intriguing visual power, wherever positioned. mnuchin gallery in new york currently hosts stacks, the first-ever exhibition devoted to a rather iconic form in the artist’s oeuvre and the history of modern sculpture. he created his first stack in 1965, and the work represented a breakthrough in his integration of art and architecture. during his career went on to revisit the stack form and has experimented with a range of materials to explore the effects of varying transparency, opacity, surface, and colour. on display at this show are a total of ten of such stacks from four different decades [on through dec 7]. location: 45 east 78th street [upper east].