Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

This awesome Spanish castle is so fantastical it was actually used on Game of Thrones.

Village situated on a narrow volcanic escarpment.

The world's largest wooden structure.

This house's itty bitty size means no humans allowed.

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

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

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

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

An abandoned beach resort in Normandy reclaimed by artists.

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

This stone memorial commemorates a group of French patriots slain by French fascists.

The first modern cemetery of Lyon is complete with more than 200 chapels and monuments.

One of the last realized projects of an influential, self-taught, French Modernist architect Jacques Couëlle.

This French chateau is home to the world’s largest private collection of fighter jets.

France's highest manned weather station is the only one still inhabited by meteorologists.

A small house sits between two huge rocks, with its back to the sea.

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

Napoleon's childhood home is now open for people to explore the beginnings of France's short general.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

These ruins reveal the remarkably intact layout of a Roman marketplace.

Trek up this glacier before it disappears.

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