An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

Mysterious Spanish catacombs of unknown origins.

A science fiction-inspired apartment building designed by a famous Spanish architect.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

An isolated village literally built into the crevices and rock formations of a mountain.

Stunning Roman aqueduct used for 1900 years and still standing.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

The earliest known map to show America, discovered by accident at a Paris bookshop.

Village situated on a narrow volcanic escarpment.

A Spanish town built into the cliffs.

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

The final resting place of the great navigator, or maybe his brother.

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

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

A Spanish forest is filled with mysterious stone carvings.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This Funeral Hearse Museum represents the finest in cadaver transportation.

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

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.