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

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

The morbid items in this small and hidden museum are not for the weak stomached.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

A medieval military street hidden beneath a charming French fishing village.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

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

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

This beautifully verdant lagoon is tucked below a massive volcano in a crater atop a black pebble beach.

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

Mysterious face-like images that appeared within an Andalusian house are surrounded by legends of the paranormal.

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

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

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

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

An ancient burial ground believed to have been used for ritual sacrifice.

A city's controversial tribute to its founder depicts townspeople flashing their bare behinds.

The ruins of a megalithic monument sit right in the garden of a luxurious Maltese resort.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.