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

Village situated on a narrow volcanic escarpment.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

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

Cliffside houses provide a spectacular view from their perch above the valley.

An isolated village literally built into the crevices and rock formations of a mountain.

A Spanish town built into the cliffs.

A landscape decorated with enormous skull sculptures.

A Spanish forest is filled with mysterious stone carvings.

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

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

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

This small Spanish village still pays homage to the Spaghetti Western films that were shot there in the 1960s.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.