The towers of the Golden Gate bridge can be seen just beyond the green contours of the Headlands.

The interiors of the buildings have the remains of an elaborate system of ducts, suggesting climate control for old room-sized computers.

A lovely view of the San Francisco peninsula.

Looking down on a system of abandonded roads, broken and scattered by the busy faultlines of the region.

A barricade stops this "road to nowhere" from dropping into the pacific.