This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

The prolific artwork of a self-taught sculptor.

An impressive home made of stone, carved more than a century ago.

12th-century holy complex shares land with a natural park full of heavenly waterfalls and raptors.

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

A Spanish artist builds his own castle.

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

This small chapel is built of human bones and decorated with a golden skeleton.

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

The world's largest wooden structure.

Spain's stunning solar energy plant.

Moorish signal station on a stratgic rocky outcrop.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

A Spanish town built into the cliffs.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

A huge cathedral single-handedly constructed by one eccentric monk.

"Alleys of Stone" form natural mazes in Spanish natural park.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

Geological storytelling.

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

Vibrant street art created with mixed media.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

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

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.