A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A modernist landscape of water and sci-fi concrete.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

An astounding collection of taxidermy, fossils, skeletons, and even a few strange live beasts.

This pair of running lions engraved on animal bone is one of the earliest artistic depictions of big cats.

Legend has it this 11th-century castle was paid a visit from the devil.

The ruins of an abandoned cemetery are among the last remnants of the old village of La Boulaye before a wealthy landowner had it relocated.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

A remote hilltop covered in giant monoliths haunts the Brittany countryside.

Nearly every wall in this French villa has been "tattooed" by artist Jean Cocteau and other famous painters.

A medieval military street hidden beneath a charming French fishing village.

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

This medieval chapel is now a shrine to the region's favorite sport.

Antique cinematography artifacts fill this museum dedicated to the inventors of the moving picture.

This hidden workshop is filled with molds of France's most iconic sculptures.

A swath of France so devastated by war it is still forbidden to go there.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

An image of the legendary saint stands in the shadow of a cathedral she liberated.