This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A strange house built only at night, with rumored mystic inspiration.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

Towering basalt columns, a creation of fire and ice.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A trash dump made beautiful by nature's power.

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

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Exotic feline breeding compound and conservation center.

San Francisco Bay's ghost town.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

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

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

One of the ghostly stops along Route 66.