Americans call Niagara Falls a natural wonder, but the falls aren't very natural anymore, but a study in artifice. Water diverted, riverbed reshaped, brink stabilized, and landscape redesigned, the falls are more a monument to man's meddling than to nature's strength. Held up as an example of something real, they are hemmed in with fakery---waxworks, haunted houses, IMAX films, and ersatz Indian tales. A symbol of American manifest destiny, they are shared politely with Canada. Emblematic of nature's power, they are completely human-controlled. An archetype of natural beauty, the falls belie an ugly environmental legacy still bubbling up from below. On every level, Niagara Falls is a monument to how America falsifies nature, reshaping its contours and redirecting its force while claiming to submit to its will.