Building used for MiB headquarters in the films
The Men in Black Headquarters is the main base of the Men in Black. It is located at 504 Battery Drive in New York City, in the films, and changes locations in the animated series. The HQ is a pivetal role in the organization, and it where the agents and aliens meet.
Appearance
From the outside, it appears to be just another building, and when you go inside, it still is just anothe building. It has two large fans, and a lone guard sitting in a chair, and a lone elevator. Once down the elevator then the real HQ is shown. It has a futuristic look, with high walls, and has many rooms. Inside these rooms contain the devices and technology. Above everything is an office towering above all else. This is Zed's office. The elevator also takes people to a training level, with many rooms that recuits train in. There is also a breakroom, where the Worms hang out.
History
Men in Black
Men in Black: The Series
In the animated series, the HQ has changed location, presumably as another Hollywood movie was made about the MiB (a reference to the film). It is now under an airport.
Men in Black II
In the second movie, an alien known as Serleena takes over MiB HQ.