These 10 Most Dangerous Prisons will Scare the Hell Out of You

San Quentin Prison

This prison has been in operation since 1852, and is the oldest prison in California. It even houses a gas chamber, although it is not used anymore. Death penalties are carried out through lethal injection. This is a prison cell that sees tons of riots all the time. It has remained a problem, and continues to be one. In 2006, a racially motivated riot started and it injured 100 inmates, even killing two. It is also known for its poor living conditions.