Introduction :

The Empire State Building remained thetallest man-made structurein the world for 23years before it was surpassed by the Griffin Television Tower Oklahoma(KWTV Mast) in 1954.

It was also thetallest free-standing structure in the worldfor 36years before it was surpassed by theOstankino Towerin 1967.

The longest world record held by the Empire State Building was for the tallest skyscraper (to structural height), which it held for 42years until it was surpassed by the North Tower of theWorld Trade Centerin 1973.

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