These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

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

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

Grottoes, sculptures, and recycled ceramics permeate what was once just a small farm in France.

Series of underground houses inhabited continuously for centuries.

A chapel on a volcanic core, marking the end of a successful journey.

An ordinary pond with fish from out of this world.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Not quite the menace it once was, this monster still has some chops.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

The 10,000 Torii shrine.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

This 700-year-old street food market features baby octopus and soy donuts.

This otherworldly French waterfall looks like its waters have turned to stone.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

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

In France, a medieval-style home pays homage to an intrepid explorer who discovered Québec.

Folklore and history carved into Brittany's coast.