Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

This Pringle-shaped ledge makes for the perfect photo op.

This impressive tunnel was dug entirely by hand over the course of 36 years.

A regular looking rock with an unbelievable history.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

An inconspicuous footbridge beloved by San Diego locals.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A hand-built folk art installation covered with messages of God's love.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.