Photo © Ezra Stoller | Esto
Today’s modern skyscrapers owe an immense debt to the John Hancock Center. Chicago’s third-tallest building ushered in the modern age of supertalls with its iconic design and the revolutionary structural engineering used to build it. When it was topped out on May 6, 1968, it was the second-tallest building in the world and the tallest outside New York City.
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Skidmore, Owings & Merrill architect Bruce Graham eventually hit upon a tapered design where the residential component would be built atop the offices. The offices are on the 13th through 41st floors, with 700 condos on floors 44 through 92.