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America's greatest structural feats were built using the most advanced engineering in the world. This is a mashup of S01E01, "World's Greatest Stadium" and S01E03, "Super Skyscraper NYC".
In Barcelona, Spain, the Sagrada Familia has taken more than 140 years to build; today, engineers are nearing completion of the world's tallest church (565 feet), designed by maverick architect Antoni Gaudi.
Building Giants showcases how key technological innovations enable giant superstructures to be built. Footage filmed during construction along with CGI reveal the building process with astonishing detail.