The World's 18 Strangest Dams   By Michael Seo   Grand Coulee
Dam  Where:Grand Coulee, Washington–Columbia River  Why It's
Unique: Washington state's Grand Coulee Dam is the largest in
the United States. Nearly a mile long and 503 meters wide, its
base area is large enough to hold all the pyramids of Giza. At
115 meters high, the dam is more than twice the height of
Niagara Falls. The dam also has a memorable role in folk music
history—a governmental energy organization commissioned Woody
Guthrie to write songs about the dam in the early 1940s,
including "Roll On, Columbia, Roll On" and "Grand Coulee Dam."
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