This small and often-overlooked museum holds some of Spain's finest artistic treasures.

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

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

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

A charming Spanish village sits atop this natural limestone overpass.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

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

A completely underwater art museum sends a stark message about humans' impact on the environment.

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

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

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

A Spanish town built into the cliffs.

The earliest known map to show America, discovered by accident at a Paris bookshop.

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

Village situated on a narrow volcanic escarpment.

The final resting place of the great navigator, or maybe his brother.

A Spanish forest is filled with mysterious stone carvings.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Week-long block party becomes a competition for the best decorated street.

Bacteria and algae give the salty water its bubblegum hue.