Albuquerque found the perfect use for tumbleweeds at Christmastime.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

Astounding collection of coin-operated games and automata.

The city is full of whimsical portals to another world.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

Every last book in this bookstore is signed by the author.

The world's oldest bookshop still in operation.

Erotic art covers the walls of the largest ancient pleasure palace.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

An alchemist's "magic door" stands in the middle of a Roman park.