Legend says train robbers stashed their gold within the depths of this unusual cave.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Hundreds of preserved dinosaur footprints can be found along a hiking trail in this small village.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

A darkly erotic open-air statuary in Catalonia.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

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

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

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

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

Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

A science fiction-inspired apartment building designed by a famous Spanish architect.

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

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

A charming Spanish village sits atop this natural limestone overpass.

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

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

Village situated on a narrow volcanic escarpment.

The morbid items in this small and hidden museum are not for the weak stomached.

A Spanish town built into the cliffs.

This Funeral Hearse Museum represents the finest in cadaver transportation.

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