Nickname bestowed on the Sun Microsystems campus in Menlo Park, California at the intersection of Willow Road and California Highway 84. The campus architecture, the wall completely surrounding the inner portion for security, and it's location at the end of the Dumbarton Bridge have caused many people to compare it with the similarly styled, but far more secured, San Quentin prison, located at the end of the Richmond-San Rafael Bridge at the other end of the San Francisco Bay.