Written by:host
5/1/2009 1:40 PM 

May 1, Chicago 1884: Construction begins in Chicago on the Home Insurance Building, generally acknowledged as the first steel-frame high-rise. The innovation heralds the era of the skyscraper and the modern city. People are only willing to walk up so many flights of stairs, so if you want to build tall, you need to haul them up in some form of elevator. But people also have an aversion to falling from great heights, so you’ve got to have an elevator that won’t fall if the cable breaks...more

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