In the decades following 1923, many improvements and additions were made at the Maine State Prison at Thomaston, including a new Commissary, Segregation Unit, Chapel, Gymnasium, and Deputy Warden's Office. In 1992 the Segregation Unit closed and a new "Super Max" facility opened in the neighboring town of Warren. On February 11, 2002, the prison at Thomaston closed and 400 prisoners moved to a new 900 bed, maximum security facility in Warren, Maine. On March 21, 2002, demolition began, and after 178 years the old prison became part of Maine history.