Area 51 is a top-secret, heavily guarded military installation in rural Nevada. Since the second half of the 20th century, there has been a lot of speculation that Area 51 is a facility for researching UFO and alien technology.
The existence of Area 51 has been known for years, but the government only officially acknowledged its existence in 2013 as the result of a Freedom of Information Act request. Area 51 became the subject of UFO conspiracies following a supposed crash in Roswell, N.M. in 1947. Witnesses claimed that UFO wreckage and alien carcasses were taken away by government officials. Since then, the region has been a hotbed of UFO sightings.
The official purpose of Area 51, according to the reports released in accordance with the Freedom of Information Act, is that it is a facility for developing aerial surveillance technology. Although the CIA has officially acknowledged the existence of Area 51 and its purpose, it has faced accusations of a government cover up by extreme believers of the UFO theories. The location's remoteness and heavily guarded perimeter contribute significantly to such claims. Aside from a top secret alien and UFO research facility, other speculation about the purpose of Area 51 is that it is a government toxic waste dump.