Neoclassical Revival mansion and set of horror cult classic Phantasm.

The sun acts as a key that only fits this giant keyhole twice a year.

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

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

This infamous prison has a store where you can buy goods crafted by incarcerated people.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

A cobblestone alley with an interesting past.

A private home built to resemble the shape of a microscopic creature.

A vast city of the dead, where the deceased outnumber the living by more than a million.

First LEED-certified gas station in the United States.

While exploring the desert, you can stop by the home of a fictional heretic from a parallel universe.

Nuclear waste dump site now an environmental sanctuary.

An abandoned, unfinished mansion on grounds strewn with lava rocks.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

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

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

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

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

A Mysterious Masonic tomb in San Luis Obispo.