Building 470 — also called the Pilot Plant, or sometimes “the Tower”, or “Anthrax Tower” — was a notorious seven-story steel and brick building at Fort Detrick in Frederick, Maryland, USA, used in the small-scale production of biological warfare (BW) agents. The building, a Cold War era structure, was transferred from the Department of Defense to the National Cancer Institute-Frederick (a unit of the National Institutes of Health) in 1988, to which it belonged until 2003 when it was demolished.