I have put this so high on the list because it is the one place most readers are likely to expect to see. Area 51 is a nickname for a military base that is located in the southern portion of Nevada in the western United States, 83 miles (133 km) north-northwest of downtown Las Vegas. Situated at its center, on the southern shore of Groom Lake, is a large secretive military airfield. The base’s primary purpose is to support development and testing of experimental aircraft and weapons systems. The intense secrecy surrounding the base, the very existence of which the U.S. government barely acknowledges, has made it the frequent subject of conspiracy theories and a central component to unidentified flying object (UFO) folklore. The sign above states that deadly force can be used if people enter the Area 51 zone.