Niagara Falls is more than the celebration of a natural wonder; it's a study of human achievement and human folly on an epic scale. It's a tale of affable lunacy and high drama, danger and desire. The awesome Niagara Falls was the nation's first great symbol, an emblem of a vast, untamed continent of beauty and limitless resources. The fate of that beauty and bounty is the focus of the film. Mariette Hartley narrates.

Tuesday, 11/11/08 from 9-10 p.m. ET

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