The oldest Roman lighthouse still in use.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Moorish signal station on a stratgic rocky outcrop.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Rare karst landscape eroded from a flat seabed.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

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

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

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

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

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

A Spanish town built into the cliffs.

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

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

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

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.

Bacteria and algae give the salty water its bubblegum hue.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Architectural monsters are devouring this palace's every door and window.