Tags: Prison.
San Quentin State Prison (SQ) is a California Department of Corrections and Rehabilitation state prison for men located in unincorporated San Quentin Marin County California United States. Opened in July 1852 it is the oldest prison in the state. California’s only death row for male inmates the largest in the United States is located at the prison. It has a gas chamber but since 1996 executions at the prison have been carried out by lethal injection.