The 100-story, 1,127-foot (344 m) tall skyscraper is located at 875 North Michigan Avenue in the Streeterville area of Chicago, Illinois.
When completed on May 6th, 1968 the building was the tallest in the world outside New York City.
The buildings architecture is a good example of structural expressionist style.
The John Hancock Center in Chicago, Illinois has a distinctive X-bracing exterior and gently sloping sides making it appear much taller than it is. This is an awesome trick of perspective the architecture plays on all who see it.
Chief designer of the John Hancock Center was Bruce Graham and the structural engineer was Fazlur Khan.