9 Notable Buildings With Secret Floors
(via mental_floss) Secret floors have long captured the imagination; conspiracy theorists love to imagine that government buildings keep their darkest
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buildings
7 of the Tallest Skyscrapers in the United States
(via Popular Mechanics) When American construction reaches for the sky, it does so mainly in either New York City or
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10 of the World’s Tallest Buildings (During the 19th Century)
Today, tall buildings are nothing out of the ordinary. But before the advent of modern machinery that would do much
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