The majority of the first season of Prison Break was filmed on location at Joliet Prison, Illinois.[2]After it was closed down in 2002, Joliet Prison became the permanent set of Prison Break in 2005, and was immortalised as Fox River State Penitentiary on screen. Scenes set in Lincoln's cell, the infirmary and the prison yard were all shot on location at the prison.[3] The cells that housed the general prison population were specially built with three tiers whereas the actual cells located in Joliet Prison only had two tiers and were smaller.[4] Exterior scenes were filmed in areas around Chicago, Woodstock and Joliet in Illinois. Other locations included O'Hare International Airport in Chicago and Toronto, Ontario in Canada.