Monika Sosnowska, Tower, 2014. On view until October 25 at Hauser & Wirth NYC. 

Roger Hiorns, Untitled (Security Object), 2013. Cast stone  on view at Luhring Augustine Gallery, Chelsea until October 18.

David Hammons, Untitled, 2007. Mixed media and American mink fur. Photo: Jack Hems and Patrick Dandy. On view at White Cube Gallery in London until January 3, 2015.

Helen Marten, Orchids, or a hemispherical bottom, 2014. On view at Johann König Gallery in Berlin, on view until November 1.