but the facility also houses richard ramirez, better known as the night stalker, and richard allen davis, polly klaas' killer. the prison is more than 150 years old. the walls are crumbling. and the institution is outdated, contributing to an overwhelming increase in both the number and severity of brutal assaults by inmates. during the next hour, you will witness life inside san quentin, including a look inside california's vicious death row. >> san quentin opened in 1852 and today, seems physically trapped in the century in which it was conceived. old and decrepit, san quentin is riddled with shadowy alcoves and blind spots. there are no electrified, lethal fences. the towers around the perimeter must still be staffed where, incredibly, there are fewer surveillance cameras than a single convenience store. and worse yet, a lack of modernization has put officers in constant risk of inmate attack. >> every day i walk through those gates, the thought crosses my mind. is today going to be the last? >> the grounds are a sprawling 432 acres located on the shores of beautiful san francisco bay