A former military officer testified at a congressional hearing last week that the US has evidence of alien life. The country's fascination with aliens and UFOs has translated into big money for some tourism sites. From Pennsylvania to California, here are some locations to visit to take a trip into the unknown. The growing belief in the extraterrestrial translates into big dollars for some of the hottest UFO tourism spots nationwide. If you're feeling a sense of intergalactic wanderlust, here are some of the most popular UFO tourism sites in the US:

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Persons: — Organizations: Gallup, Roswell's Public Affairs Department Locations: Pennsylvania, California, Roswell , New Mexico