Hundreds of prehistoric stones, arranged in perfect lines in a French field.

Europe's largest community of crocodiles and alligators.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A charming little museum founded by the designer of the Statue of Liberty.

The world's largest reflecting pool is just two centimeters deep.

Fighting the British and making game shows for over 150 years.

This crack in France's seaside cliffs once hid a sinister secret.

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

An aluminum skeleton brings Chinese mythology to the French shore.

This small island, a byproduct of 19th-century canal construction, is now home to a charming Japanese garden.

Home to the "Rat King" of Nantes and other wonders of the natural world.

A massively oversized measuring tape sculpture sits inside a hidden yard.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The sunken structure looks like the victim of a catastrophic flood.

Historic medieval fortified city in southwest France.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This bridge was constructed from the rubble of the infamous Bastille.

The once highest point in China blends symbolic design with a kick of adrenaline.

An out-of-place slice of France, smack in the middle of Shanghai.

A prestigious learning institute of old Shanghai.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.