The U.S. Penitentiary Administrative Maximum Facility, better known as ADX, has recently lost two of its most high-profile prisoners. After living in the supermax outside Florence, Colorado, for more ...

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 ...

They're required to work despite the partial government shutdown. When you walk into the federal "supermax" -- or supermaximum security -- prison just outside Florence, Colorado, there are bright ...

When President Donald Trump commuted the federal prison sentence of former Chicago gang leader Larry Hoover, it may have marked the first time a form of clemency was granted on a current inmate of the ...

The U.S. Penitentiary Administrative Maximum Facility, also known as the ADX or "Supermax," in Florence, Colo. (Jason Connolly / AFP - Getty Images file) A federal judge has denied a legal attempt, ...

The Supermax facility in Florence, Colorado, is the ultimate prison. As the highest level of security in the US federal penitentiary system, it’s where some of the most dangerous offenders are sent – ...

Robert Hanssen, a former FBI agent who sold secrets to the Soviet Union in exchange for cash and diamonds, died Monday morning in the Supermax prison in southern Colorado. He was 79. Prison staff at ...