A historic Christian shrine nestled within a spectacular natural cave.

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

A charming Spanish village sits atop this natural limestone overpass.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

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

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

A colossal sculptural lion built by the same man who designed the Statue of Liberty.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

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

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

The world's tallest bridge is also possibly the most elegant.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

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

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

These quaint French houses dangle precariously over a precipice.

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

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.