A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Five candy-colored villages on the Italian Riviera.

Jesus' footprints and the first catacombs in the world.

2300-year-old Roman road connecting the empire.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

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

An enormous illuminated figure dances on the Las Vegas strip.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

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

An essential stop before plundering, BYO Cutlass.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

A museum befitting the city responsible for supplying the majority of the world's LSD.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

This shop specializes in oddities and Victorian-inspired wonders.

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

A huge musical instrument played by the ocean.

Hot springs monkey spa in the middle of Hell's Valley.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

250-year-old farm now features sculptures, a petting zoo and a hippy-bazaar.