By Aimée Dowl
They've landed! According to thousands of Americans, aliens have touched down, crashed, performed experiments on humans, and in one case set up a UFO base in some of the country's most scenic areas. Small-town America in particular has had its fair share of extraterrestrial contact, and locals have created museums and memorials to honor their most famous close encounters, as well as some lesser-known E.T. moments. Roswell in New Mexico and Nevada's Area 51 are the world's most famous landing pads, but several less-known sites host fewer tourists and still deliver the aliens.
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