Last week, the Metropolitan Museum of Art unveiled a new large-scale installation by artist Dan Graham entitled Hedge Two-Way Mirror Walkabout. The S-shaped, maze like structure sits between two ivy hedgerows at the center of the museum’s rooftop garden – the terrain of which has been transformed through collaboration with Swiss landscape architect Günther Vogt. To complement the new site-specific installation, several of Graham’s related projects spanning over the past 35 years are also on display inside the Met’s modern and contemporary art galleries. The special exhibit and rooftop commission will remain on display until November 2. Read more and check out our exclusive preview photos after the jump.