Our Pick
Posted on @rawstates
ADX Florence, the federal supermax
1994
Florence, Colorado
Public domain · Wikimedia Commons
The federal supermax, built after two officers were murdered in Marion, holds prisoners twenty-three hours a day in poured-concrete cells: Kaczynski wrote letters here for twenty years, El Chapo arrived after his second escape elsewhere, and no one has ever escaped. Staff call it the Alcatraz of the Rockies.
That was 1 of the hidden places.
Location: historic site
This place has its own thread on r/rawstates
Read what people are saying about it, or add your own.