Today the focus of the prison system is to rehabilitate more than to punish, which has seen the great evolution of the prison system in the last century. The desire to separate criminals and punish them away from the society has greatly influenced the architecture of the prison Carlson and Garrett (2007). Some forms of architecture reflect extreme punishment, while others reflect rehabilitation and reform system. According to Carlson and Garrett (2007), currently the architecture reflects the classification systems that are used to assess inmates behavior and attempt to reflect their needs as they are in custody.
It is evident that the building form reflects the ideas and beliefs that the society has on punishment and it also reflects the management style and strategies Bosworth (2002). Another factor that determines the architecture is the shape and characteristics of the penal population. This is because if the population requires a higher security then the architecture should cater for that. A prison meant for minimum security cannot be designed the same as that for maximum security. At the same time the architecture should also cater for the size of the population US Bureau of Prisons (1949).