This shallow cave got its name from copious amount of human bones found inside.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district

One man's attempt to create an artistic wonder on a run-down block in Detroit.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

Strange physical sensations and optical contradictions keep visitors coming back for more.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

Turnip-shaped island just off the Michigan shore in Lake Huron.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

Abandoned concert venue legendary for its rock counterculture.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

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

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

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

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

Get up close to emus and ostriches, or buy their tasty meat.

A hidden world of exotic succulents and cacti.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Gorgeous purple flowers drape from the world's largest blossoming plant.

A grove of "candelabra redwoods" deep in California's Lost Coast.

Discover for yourself what Herb Caen referred to as "the best kept secret in the Bay Area."