Madison Square Park Conservancy is known for its art and is now on its thirty-fourth exhibition, Prismatic Park by artist and MacArthur Foundation Fellow recipient Josiah McElheny. The project features three large sculptures of painted wood and prismatic glass on view in Madison Square Park from June 13, 2017 through October 8, 2017. There will be artists in residence creating works and presenting workshops on Prismatic Park through the duration of the exhibition. For schedules and artist bios click here for Music, Dance, and Poetry.
I took photos of the actual prismatic park for Madison Square Park, and they were used in Time Out as well as other places:
You can find find more information and schedules of the ongoing art on https://www.madisonsquarepark.org/mad-sq-art/mad-sq-art-josiah-mcelheny