One of the most unusual geological features, recognizable from a dozen hit movies.

The liveliest ghost town in the state.

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

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

This historic tower in the California desert promises visitors a "vortex of good vibes".

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

World War II-era Nazi compound nestled in the Santa Monica hills.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

Abandoned bridge hidden deep in the San Gabriel Mountains.

An offbeat angle on the ocean viewed through an antiquated lens.