The World’s 13 Most Guarded Places, And Their Dark Secrets

7. ADX Florence

ADX is a high-security prison in Colorado containing the worst criminal offenders. Convicts considered to be the most dangerous are housed here. The prison maintains guard dogs that prowl 12-foot, razor-wire topped fences. Motion detectors, pressure pads and cameras constantly monitor the property, which is protected by more than 1,000 steel doors.


The supermax unit at ADX Florence houses about 410 male inmates, each assigned to one of six security levels.

The facility is best known for housing inmates who have been deemed too dangerous, too high-profile or too great a national security risk for even a maximum-security prison. These include the leaders of violent gangs who had continued to issue orders to their members from lower security facilities.

ADX also houses foreign terrorists, including Zacarias Moussaoui, the only person convicted in civilian court of the September 11 attacks; Faisal Shahzad, the perpetrator of the 2010 Times Square car bombing attempt;and Ramzi Yousef, mastermind of the 1993 World Trade Center bombing; as well as domestic terrorists, such as Ted Kaczynski and Eric Rudolph. Timothy McVeigh, who carried out the 1995 Oklahoma City bombing, was housed at ADX before he was sentenced to death in 1997 and transferred to the United States Penitentiary, Terre Haute, which houses most federal death row inmates and is where Federal death sentences are carried out.


The World's 13 Most Guarded Places, And Their Dark Secrets

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