The world's skinniest skyscraper: Steinway Tower, New York

A file photo of four residential skyscrapers tower over the skyline south of Central Park in the Manhattan borough of New York City; (from left) Central Park Tower, One57, Steinway Tower and the MoMA Expansion Tower. Photo: Ted Shaffrey/AP

One skyscraper stands out from the rest in the Manhattan skyline. It's not the tallest, but it is the skinniest – the world's skinniest, in fact.

The 84-storey residential Steinway Tower, designed by New York architecture firm SHoP Architects, has the title of "most slender skyscraper in the world” thanks to its logic-defying ratio of width to height: 1-to-23 1/2.