A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

San Francisco Bay's ghost town.

A Roman-inspired temple once controlled half of San Francisco's waters.

A classically inspired temple in Redwood City.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

A collection of haunted objects and macabre oddities under one roof.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

The best Tiki bar in Las Vegas.

Temporary Burning Man sculpture made of two 18-wheelers.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This institution collects the history of burlesque dancing with a titillating collection of ephemera and pasties.

Guns that have been defending San Francisco since 1904.

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

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

With the touch of a button, you can read a randomly selected short story.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

A shining, cold, black organ lies in San Francisco's financial district.

Faceless white figures loom over the city from the rooftop.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.