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

Thousands of acres of beautiful wild landscape in the Great Basin.

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

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

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

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

These millipedes glow not out of attraction, but as a not-too-subtle warning.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

A regular looking rock with an unbelievable history.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Canyon walls shrouded in ferns.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

The ghostly remains of an accidental sea.

The only theatre in the world constructed specifically for sound movement.

A trash dump made beautiful by nature's power.

A winding path built in secret on the edge of the continent.

A huge musical instrument played by the ocean.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.