An island in [[San Francisco]] bay, where a fortress was constructed in the mid-19th century. Shortly afterwards, it was converted into a famous and notoriously escape proof prison to hold prisoners of war. After the 1906 San Francisco earthquake, it was used to house civilian prisoners.<ref>http://www.alcatrazhistory.com/rs1.htm</ref> | An island in [[San Francisco]] bay, where a fortress was constructed in the mid-19th century. Shortly afterwards, it was converted into a famous and notoriously escape proof prison to hold prisoners of war. After the 1906 San Francisco earthquake, it was used to house civilian prisoners.<ref>http://www.alcatrazhistory.com/rs1.htm</ref> |