The Blackstone Group recently purchased Chicago's Willis Tower for $1.3 billion. See how the building stacks up against the world's tallest.
Burj Khalifa, also known as Burj Dubai or Dubai Tower in the United Arab Emirates, is the tallest building in the world at 2,717 feet tall.
Bram Stoker's "Dracula" is published, John Wayne and Miles Davis are born,…
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