At the time it was completed, the J. Edgar Hoover building was reported to have 2.4 million square feet (220,000 m2) to 2.535 million square feet (235,500 m2) of interior space, of which 1 million square feet (93,000 m2) were usable office space. According to more current information provided by the FBI, the building contained 2,800,876 square feet (260,209.9 m2) of interior space in 2010. Its internal amenities included:
An amphitheater
A 162-seat auditorium
An automobile repair shop
A two-story basketball court
An eighth-floor cafeteria, with access to a roof garden
Classrooms
Cryptographic vault
Developing laboratories for both still photography and motion pictures
Exercise rooms
A film library
A firing range
80,000 square feet (7,400 m2) of laboratory space
A medical clinic
Morgue
A printing plant
A test pattern and ballistics range
A 700-seat theater
The structure has three floors below ground.
— Wikipedia
This is just ONE reason...why I have quit voting...as of this year.