Gettysburg Battlefields (Pennsylvania):
July 1-3, 1863: Between 46,000 to 51,000 men died. Much has been reported here including apparitions, soldier units marching, gunfire, voices, and cannonball sounds. Of all outdoor haunted locations, this one has more photographic evidence, both still and video. For many, if you were to go to one outdoor location and want a "guaranteed" experience, the battlefields of Gettysburg provide.