About World's Greatest Skyscrapers
The world's greatest skyscrapers were built with ambitious engineering and cutting-edge technology, and experts go behind-the-scenes of these modern marvels to reveal the secrets of their inner workings and show how humans have conquered the skies.
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After years of design, debate, and delays, America's greatest skyscraper and symbol of rebirth is finally rising skyward. Take an inside look at the rebuilding of the new World Trade Center and the 9/11 Memorial. Can it all be completed before the tragedy's ten-year anniversary?
Skyscrapers: Engineering the Future
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