Visible below the waves are memorials to the city's Gold Rush dead.

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

A long-vacant Scottish Rite temple in Hollywood has been converted into an art museum filled with Masonic relics.

You don't want to get caught in this trap--or do you?

A quiet marker in memory of local men and women lost in WWI.

This antique shop specializes in the history of print and design.

The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

Dentist's hated concrete colossi are now beloved icons of the community.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

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

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.

This private residence was the template for one of the most beloved television homes of all time.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

A modern-day Lascaux cave underneath Paris.

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Hundreds of caves filled with thousands of centuries-old statues and murals.