Fact #3 

The U.S. Library of Congress in Washington D.C. is home to more than 160 million books, recordings, photos, manuscripts, and other important pieces of American cultural history. But not everything is kept within those walls. 75 miles to the southwest near the foothills of the Blue Ridge Mountains is the Packard Campus of the National Audio-Visual Conservation Center, a 415,000 square-foot (38,555 square-meter) facility that houses 140,000 reels of film. Those reels include classics such as Casablanca, flops such as Gigli, and even nitrate film—an old medium that's kept in its own vaults because it's highly flammable. In fact, all of the center's 6.3 million collection items are well protected, since the Packard Campus was once a nuclear bunker.