A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

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

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

A psychedelic labyrinth on the San Francisco bay.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The unbelievably opulent home built for an infamous newspaperman.

A Mysterious Masonic tomb in San Luis Obispo.

A hotel and restaurant serving as the mecca of kitsch.

The video game-themed street art first popped up in the French city.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The narrowest street in Paris.

A surrealist timepiece by the artist of melting clocks.

This demon atop the Notre-Dame de Paris looks utterly bored.

The heaviest gold coin ever minted.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Notorious artist squat renovated into legal studios.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

This little-known relic crypt holds stolen parts of a Roman Empress.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

The bears may be gone, but their old cages can still be found.