Isolated inside its own fenced courtyard, the small building is known simply enough as the execution chamber. Between the years of 1937 and 1989, 39 or 40 (depending on the source) inmates were put to death inside the structure. All of the executions, save one, were conducted in the state's gas chamber where the sealed unit was filled with cyanide gas. The sole exception was the prison's last execution on January 26, 1989.
Missouri State Penitentiary
Jefferson City Missouri