6. 30 Hudson Yards (1,287 feet)
30 Hudson Yards, by Kohn Peterson Fox and Related, will be the tallest building in the rail yard decking project with an observation deck at 1,000 feet and a death defying “thrill device” at what will be the highest observation deck in the city. According to The New York Post, it “could have a glass walkway that may slant and tilt for even more chills and thrills.”