In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

Vibrant street art created with mixed media.

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

Walls of stone rise up from sinkholes caused by underwater erosion.

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

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

Geological storytelling.

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

Giant topiary dog once played a role in a terrorist bomb plot.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

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

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

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

Natural stone arches form a walkable "cathedral" at low tide, then disappear entirely when the water returns.