Elevators going to different floors and sky lobbies exist to move people throught a highrise most efficiently. The concept of different elevators for different floors I think existed as early as the Empire State Building but the idea of skylobbies came into effect with the John Hancock Center (mostly to separate office from residential in this case), the World Trade Center and the Sears Tower.
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Devout Chicagoan, political moderate and paleo-urbanist.
"Auto-centric suburban sprawl is the devil physically manifesting himself in the built environment."
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