A historic Christian shrine nestled within a spectacular natural cave.

Eccentric sculpture garden brings Basque mythology to life.

Volcanic rocks ground down into sand make this Spanish beach as black as night.

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

Living towers made of people that are now recognized by UNESCO.

Salaguti's live-in museum: a fortress against criticism and consumer art.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

Remote ruins of a 2,400-year-old Iberian settlement.

This Canary island is a quintessential example of nature’s beauty, and its unbridled fury.

This underwater graveyard commemorates a group of murdered 16th-century missionaries.

Walls of stone rise up from sinkholes caused by underwater erosion.

Haunting monument to the German Jewish philosopher who died while fleeing fascism.

An old wool-washing house filled with Fluxus contemporary art.

A house covered entirely with shells.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.

Archaeological site of Iberian people ruins.

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

An independent naturist colony amidst 1000-year-old ruins.

A unique exhibit lets blind people experience famous works of art and architecture with their hands.

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.