mike 67cd4386's User Profile - Atlas Obscura
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Da Nang, Vietnam

Am Phu Cave

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.
Gea de Albarracín, Spain

Albarracín-Cella Roman Aqueduct

This ancient tunnel is one of the most important examples of Roman hydraulic engineering in Spain.
Mohorte, Spain

Las Torcas de Palancares

Walls of stone rise up from sinkholes caused by underwater erosion.
Campillo de Dueñas, Spain

Castillo de Zafra

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

Ciudad Encantada

Geological storytelling.
Las Majadas, Spain

Los Callejones de Las Majadas

"Alleys of Stone" form natural mazes in Spanish natural park.
Titulcia, Spain

Cave of the Moon

Mysterious Spanish catacombs of unknown origins.
Sers, France

Pic du Midi Observatory

This futuristic observatory at the top of the Pyrénées offers unrivaled views.
Pimiango, Spain

El Pindal Cave

These primitive rock paintings include a very beloved depiction of a woolly mammoth.
Ribadesella, Spain

Tito Bustillo Cave

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.
Martorell, Spain

Pont del Diable

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.
Puentedey, Spain

Natural Arch Bridge

A charming Spanish village sits atop this natural limestone overpass.
Sanlúcar la Mayor, Spain

Solar Power Tower

Spain's stunning solar energy plant.
Wamba, Spain

Wamba Ossuary

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