These fantastically named natural pools look like something out of a Scottish myth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A spectacular walk on the flank of a gorge.

An iconic photograph from the Spanish Civil War saved this shrapnel-scarred historic house from destruction.

Possibly the oldest masonry dam in all of Europe.

Remains of the lost church hide beneath this Spanish Parliament building.

An ancient tower built during Roman times as a lookout post still stands to this day.

This multi-level, aqueduct-footbridge hybrid is one of the greatest works of the Spanish Renaissance.

Originally planted by the ancient Carthaginians, this sprawling palm grove is one of the largest in the world.

Remnants of the rich history of fish salting in this ancient Mediterranean port town.

Two 2,500-year-old Phoenician boats found on the coast of Spain, giving incredible insight into the ancient maritime traders.

A neighborhood park in the city of Cáceres hides what some believe are revolutionary examples of Neanderthal cave art.

The quirky - and private - constructions of a secluded artist depict the house of God.

Long tunnels run under the ancient chariot racing circuit to the tower.

This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.

This 7,000-year-old megalithic wonder covered by a Franco-era reservoir emerges in times of drought.

An impressive home made of stone, carved more than a century ago.

This charming, medieval walled village is Spain's first "book town."

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

During an annual Catholic feast in this tiny Spanish village, men dressed as devils leap over rows of babies to cleanse them of sin.

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