Semi-mystical manmade towers of rocks decorate this rocky seaside.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

Hundreds of caves once used to store grains and animal feed.

A whimsical garden of outsider art in the Spanish countryside.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

Vibrant street art created with mixed media.

A five-square-mile slice of Spain on the Mediterranean coast of North Africa.

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

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

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

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

A darkly erotic open-air statuary in Catalonia.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

A living art gallery painted on a canvas of Monterey pine trees.

An architect transformed this abandoned cement factory into his castle-like workshop.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

Moorish signal station on a stratgic rocky outcrop.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

Of course Salvador Dalí lived in a castle...

Stunning Roman aqueduct used for 1900 years and still standing.

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

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

A breathtaking canyon offers stunning views and frightful pathways through an ecological paradise.