Fremont County, Colorado, has been dubbed the "Prison Valley" and is home to 15 high-security prisons. Seven of those prisons are located within the city limits of Canon City, Colorado.

Tucked into the high plains of Fremont County, a two-hour drive southwest of Denver, is America’s highest-security prison: ADX Florence, the only federal prison with a Supermax designation. The ...

(Reuters) - Joaquin "El Chapo" Guzman, the Mexican found guilty in a U.S. court on Tuesday of running a criminal enterprise that smuggled drugs into the United States, is likely headed to a "supermax" ...