The Most Restricted Places on Earth

Area 51 1 of 9

Located in a remote section of Nevada, about 80 miles outside of Las Vegas, Area 51 is an air base and bombing range likely used for developing and testing experimental aircraft. It took the United States government decades to even acknowledge the existence of Area 51, and its activities remain top secret. Even though stories about UFOs have made it a popular tourist destination, motion sensors buried in the ground and radar systems ensure that nobody even gets close to the base without proper security clearance.