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

A charming Spanish village sits atop this natural limestone overpass.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

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

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

The world's largest wooden structure.

A landscape decorated with enormous skull sculptures.

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

A Spanish forest is filled with mysterious stone carvings.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

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

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Bacteria and algae give the salty water its bubblegum hue.

An ancient Egyptian temple in the middle of Madrid, Spain.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A font of vintage porn on the silver screen.

A Belle Epoque bordello turned into a themed love hotel.

Dolls of all shapes and sizes display the eras of femininity in this spooky and beautiful collection.

Inside a former cabaret, seven floors of erotic art.

Weird wax anatomical models reside here, as do other anatomical specimens.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

Former hunting lodge of a duke who was an avid collector of impressionist works.