This now abandoned restaurant provides some of the most amazing views of Lisboa.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Ruins of a German Castle on top of a towering stone pillar.

A slice of central Asia in the middle of Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

A resort destroyed by a mysterious bombing offers visitors only its remains and the riddle behind it's demise.

The little tuxedo cat survived the trip, then languished in obscurity.

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.

A former milk-delivery driver and his wife turn their home into a glimmering mosaic.

A small town hallucinates en masse - Bad bread, or CIA science project?

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

Artist's eccentric property excessively decorated with found objects and work of his own.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Avant garde house of Pierre Cardin on the Cote d’Azur.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

France's national museum of scientific and industrial instruments.

A museum of carnival attractions where you are invited to ride the rides.

The idyllic island where the philosopher Jean-Jacques Rousseau spent “the happiest time of his life.”