A self-built mosaic house and sculpture park.

Grab a life-changing ham sandwich at this former horse butchershop.

Travel back in time at a Moroccan-inspired restaurant that was the height of glamor in the 1970s.

A village of art and exotic creations.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

This striking fort on the Maginot Line looks just as it did after being destroyed in the Fall of France.

According to a local legend, this peculiar mountaintop rock formation is actually a demon that was turned into stone.

A suburban housing complex with astonishing architectural features, locally nicknamed "the Camemberts."

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

This volcanic crater lake is renowned for its perfectly round shape, stunning blue-green waters, and unique geological properties.

An underground tropical garden sits inside a Paris Métro Station.

This imposing castle has stood for nearly a thousand years.

A lush vertical garden blooming in the heart of Paris.

View one man's eccentric collection of nearly 5,000 corkscrews, then sip some Chablis.

The ruins of a military fortification sit atop this mountain.

Former bridge turned into an observation tower.

These ramparts, once lined with towers, were constructed in defense of Beaune.

A large portion of this navigable canal runs under Paris's famed boulevards.

Every year, a sparkling cave is sculpted in the icy heart of a glacier.

This ancient Roman town was revered for the healing waters of its sacred spring.

These red marks, seemingly placed at random, are in fact not.

Henri Matisse's final masterpiece.

These 19th-century gas tanks were remade into an apartment complex.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.