Cliffside houses provide a spectacular view from their perch above the valley.

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

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

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

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

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

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

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

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

Village situated on a narrow volcanic escarpment.

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

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

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

This house's itty bitty size means no humans allowed.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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

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

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Built between 1901 and 1908, this building is one of the most iconic examples of modernist architecture in Spain.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.