Area 51 (Nevada)
Area 51 is the top hotspot for the world's UFO enthusiasts. In U.S. Air Force territory about an hour-and-a-half's drive from Las Vegas and it may house the remains of a spaceship (and aliens) which crashed near Roswell, New Mexico in the summer of 1947. Over the years, the U.S. government has admitted the location has hosted top-secret projects, including the U2 spy plane. Visitors are advised to respect the base's borders the guards are apparently authorized to shoot to kill.