A stealthy Apache hideaway that became the haunting site of a mass grave.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

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

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

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

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

Once the gateway to the utopian dream-village of a Civil War embalmer.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

San Francisco's first World's Fair, dedicated to the wonders of California.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

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

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An enormous illuminated figure dances on the Las Vegas strip.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

A 140-year-old castle with underground caves hidden in San Francisco.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

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