Federal Supermax (ADX) Prison, Florence, Colorado
http://en.wikipedia.org/wiki/Supermax_prison
"In Supermax prisons, prisoners are generally allowed out of their cells for only an hour a day; often they are kept in solitary confinement. They receive their meals through "food ports" ("bean holes") in the doors of their cells. Prisoners are given no work and very little access to leisure activities, though some categories of prisoner are allowed to have a television. When Supermax inmates are allowed to exercise, this may take place in a small, enclosed area where the prisoner will exercise alone.
"Prisoners are under constant surveillance, usually with closed-circuit television cameras. Cell doors are usually opaque, while the cells may be windowless. Conditions are spartan, with poured concrete or metal furniture common. Cell walls, and sometimes plumbing, are often soundproofed to prevent communication between the inmates."
http://en.wikipedia.org/wiki/ADX_Florence
"ADX Florence is a 37-acre complex located at 5880 Highway 67, Florence, Colorado. It is part of four separate correctional facilities, representing four different security levels."
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"Most cells' furniture is made almost entirely out of poured concrete, including a desk, stool, and bed covered by a thin mattress. Each chamber contains a toilet that shuts off if plugged, a shower that runs on a timer to prevent flooding, and a sink missing a potentially dangerous tap. Rooms may also be fitted with polished steel mirrors bolted to the wall, an electric light, a 13-inch black and white television that shows only educational and religious programming (which not all inmates are allowed to have), and a cigarette lighter. Windows in rooms are small, set high up in the wall, and point toward the sky, confusing the prisoner as to his specific location within the complex. Telecommunication with the outside world is forbidden, and food is hand delivered by correctional officers.
"The prison as a whole contains a multitude of motion detectors and cameras, 1,400 remote-controlled steel doors, and 12 ft (3.7 m) high razor wire fences. Laser beams, pressure pads, and attack dogs guard the area between the prison walls and razor wire."