I am intrigued by the work of Christian Marclay, in which he "transforms sound and music into visual and physical forms through performance, collage, sculpture, large-scale installations, photography, and video". His show at the Whitney runs through September 26.
Closer: In Conservation is a public art piece at St. Nicholas Park that consists of "a series of mailbox stations where people may write letters to St. Nicolas Park." Read these letters here, or write one yourself before it closes on July 16.
The Guggenheim exhibit Haunted: Contemporary Photography/ Video/ Performance "examines myriad ways photographic imagery is incorporated into recent practice and in the process underscores the unique power of reproductive media while documenting a widespread contemporary obsession, both collective and individual, with accessing the past."