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Within this prison, ’12 building‘ occupies a special position: it is a two-story concrete and steel administrative and detention building that was originally designed for administrative segregation – now often referred to as restrictive housing. It comprises six sections with a total of 504 single cells; each section is divided into smaller subsections. The cells are approximately 60 sq ft in size and designed for single occupancy, with a narrow window and a solid door.
The building has several day rooms and outdoor recreation areas, as well as its own medical stations and a kitchen. Guarding and surveillance are standard throughout: security measures include personal alarms for staff and intensive surveillance, including numerous cameras throughout the complex. Architecturally, ’12 building‘ is organized into three parts, with central circular areas that serve as recreation yards and are separated from the surrounding cells by controlled access points. This structure supports the strict separation and monitoring of inmates. Inmates on death row wear special markings and are largely excluded from normal activities and work participation in the rest of the facility.