The towers in this photo gallery are truly amazing. Some are among the world's tallest man-made structures. Others are remarkable for the ingenuity of their engineering.
Unlike skyscrapers, none of these structures provide habitable living quarters or offices. Instead, these amazing tall towers function as radio and television communication platforms, observation decks, and tourist attractions.
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 CN Tower, Toronto, Canada |  Ostankino Tower in Moscow, Russia |  Oriental Pearl TV Tower in Shanghai, China |  The Space Needle |
 Montjuic Communications Tower in Barcelona, Spain |  Tokyo Sky Tree, Japan |
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