This old mining town, deep in the California desert, has a year-round population of one.

A fashion designer's dazzling world of Japanese collectibles is hidden in a warehouse downtown.

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

The location of the last stand of Charles Manson's doomsday cult.

The haunting ruins of Jack London's dream house.

A house built from trash known as the poor man's Hearst Castle.

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

A popular tourist cave with a dark past.

The ruins of the castle that chemicals built.

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

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

A ruined hotel with an unlucky history and an eerie present.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

The fossilized remains of ancient California redwoods.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

The liveliest ghost town in the state.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

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

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

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

The unbelievably opulent home built for an infamous newspaperman.

One of the last free public hot springs is decorated with hippie art.

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