Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. institutional buildings
9. correctional institutions (buildings)
10. prisons (buildings)
11. [prison buildings by form or function]

Anotations

Scope note:

Buildings that house prisons where the security level is less than maximum security; the inmates may sleep in dormitories and have other communal facilities, with generally less supervision over the internal movements than in a maximum-security prison.