A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Paris' linguistic guide to the international language of, yes, love.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Notorious artist squat renovated into legal studios.

France's most famous cemetery, with some of its most curious tombs.

A miniature desert appears out of nowhere on the lush isle of Lemnos, like something out of a Greek myth.

An alien landscape on the banks of the Aegean Sea.

Lady Liberty's original designer installed a little clone in this French fountain.

Ten shipwreck-shaped chalets lie along the sand dunes on Namibia’s Skeleton Coast.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

You would never come across this tiny green oasis if you didn't know it existed.

Ancient man-made caves underneath small town Belgium.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

The world's tallest boat lift stands as a massive piece of industrial tourism.

This annual Belgian water race attracts bathtub captains from all over the world.

What was once a bustling mining installation is now a bustling hub of contemporary art.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.