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Completed in 1963, it was the tallest structure ever built until succeeded by the Warsaw radio mast in 1974; that mast collapsed in 1991, making the KVLY-TV mast again the tallest structure in the world until the Burj Khalifa overtook it in 2010.
As of 2013, the tallest man-made structure is the Burj Khalifa which is 829.8 m tall.