San Quentin State Prison, located in San Quentin, CA, is not only the oldest prison in the state, it's the largest in the United States. Open since 1852, San Quentin houses the state's lone death row for male inmates.

Well-known inmates include actor Danny Trejo, former Crip leader Stanley "Tookie" Williams, and Black Panthers Eldridge Cleaver and George Jackson. The latter was shot dead in the prison yard back in 1971 during an alleged prison break attempt that many believe to have been a set-up.

Click through to bear witness to the daily lives of prisoners at the facility.

[via Daily Mail UK]