Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

Life in this isolated, hilltop lighthouse was lonely, but it sure was lovely.

A trash dump made beautiful by nature's power.

Haunting and beautiful trees, doomed to die.

The oldest continuously operating church in California.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

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

An abandoned boat that's been stranded mysteriously for decades.

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

The mysterious round rocks of Schooner Gulch.

The headquarters of a secretive order is also a beautifully-designed park.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

A popular tourist cave with a dark past.

Home to the "Circus" trees created by Axel Erlandson.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

This giant shopping mall still holds signs of its automotive past.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

An abandoned lot littered with concrete debris was once the home of the world's first female railroad president.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

A comprehensive collection of Pez dispensers.