The ADC Florence Prison
This U.S. prison is a high security prison designated to house the most notorious criminals. A notable example would be the mastermind behind the bombing of the World Trade Center in 1993. To make matters more concrete, these are the criminals who are the closest to receiving the death penalty, but are kept alive for information and intelligence purposes. As far as human contact goes, these inmates are not allowed to see each other, to go outside, or to interact with anyone other than the enforcing officers assigned to them. Throughout its 20 years of operation, the only means of escape for any inmate thus far, has been to commit suicide. The external view is the closest anyone will be, to entering this prison (as a free person), without any form of high level security clearance.