East Canon Correctional Complex, Colorado

A cluster of six State facilities east of Canon City, which includes the Four Mile Correctional Facility, Colorado State Penitentiary, Centennial Correctional Facility, Arrowhead Correctional Center, Skyline Correctional Facility, and the Fremont Correctional Facility. These, along with the nearby Florence Corrections Complex (a cluster of four federal prisons, including USP Florence ADMAX, a notorious "supermax" facility), make this valley in Colorado the largest concentration of correctional facilities in the nation.