Unearthed S07E09 - Seven Wonders of America

An inside look at the incredible engineering behind America's most notable structures, including the Washington Monument, the Statue of Liberty, Mount Rushmore, the Golden Gate Bridge, the Empire State Building, Alcatraz, and the World Trade Center Twin Towers. These are some of the most impressive monuments in the United States – matching the engineering feats of the Seven Wonders of the Ancient World.