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

This embalmed man is one of the best preserved mummies from the Canary Islands.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

Vibrant street art created with mixed media.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

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

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

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

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

Abandoned waterpark turned counter-culture mecca.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

Of course Salvador Dalí lived in a castle...

This Funeral Hearse Museum represents the finest in cadaver transportation.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

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

Village situated on a narrow volcanic escarpment.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Mysterious Spanish catacombs of unknown origins.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

Commonly acknowledged as the only public monument to the Devil himself.

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

Bacteria and algae give the salty water its bubblegum hue.