Area 51(Officially named as Nevada Test and Training Range) which was established in 1955 is a secret military base located about 90 miles north of Las Vegas. In 2013 CIA admitted the existence of area 51, located in the depths of Nevada and also claims that Area51 is not hiding aliens or UFOs and believes that it is simply a test site for the aerial programs. It was originally designed for the testing of U-2 spy planes, A-12, and ultimately Stealth technology would be born there. Many believe that the area51 we see on the surface is only the tip of the iceberg; it’s far that the area also has a huge network of tunnels going several stories underground.
It is a part of a U.S. Air Force Facility that serves as a center for research, development, and testing of weapons and military aircraft. Many secret weapons such as stealth bombers and spy aircraft were tested here. When it comes to chemicals and environment, Area51 is allowed to do anything they would like do all in the name of national security. When people cross the border of Area51, they will die to leave no traces. Area 51 is the home to the latest top secret aircraft: the Aurora, among others Many of these aircraft, past and present, are able to perform incredible feats in the sky. Area 51 and the surrounding land, Area13, was considered to be the perfect place to carry out the nuclear test, as it was on flat land and in a secluded area which would be difficult to find out by public.
Barack Obama became the first U.S. President in the history to publicly mention Area51. By the early 60s, Area51 became similar to a little functioning city with different facilities like movie theaters and a baseball pitch. It is mostly known for maintaining its secrecy and all the operations held by it.It is believed and assumed that the buildings located within the complex are mostly windowless so that each people living there has zero ideas about the things the other people are doing. Both civilian and unrelated military aircraft are forbidden from entering Area51’s airspace.
Area51 and extra-terrestrial life both exist, says the head of Nasa: http://www.telegraph.co.uk/science/2016/03/12/area-51-and-extra-terrestrial-life-both-exist-says-head-of-nasa/
According to Google Earth, new construction and expansions are continuously happening in this area and thus we can say that Area51 is still very much in use.
Fig: Latest Google Earth view of Area51