As one of theĀ greenest citites in the nation, New York City is known as being a sustainable urban trail blazer, whether it’s through turning aging infrastructure into world class parks or passing groundbreaking green building legislation. So it’s no surprise that the Big Apple is filled with sustainable architecture, but you may not realize that many of the city’s most recognizable skyscrapers are LEED certified and feature a slew of green technologies. The iconic Empire State Building, the rising One World Trade Center, and the dazzling blue Hearst Building are just a few of NYC’s ecotastic towers — hit the jump to see the top six!