This abandoned gold mine found a second life as a post-apocalyptic film set.

Peek into a cave of giant, glimmering crystals.

This small Spanish village still pays homage to the Spaghetti Western films that were shot there in the 1960s.

Mysterious face-like images that appeared within an Andalusian house are surrounded by legends of the paranormal.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

This art installation at an abandoned lipstick factory has distinct anti-capitalist vibes.

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

A micro-communist utopia in Spain with no police, no mortgages and full employment.

Rare karst landscape eroded from a flat seabed.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A Spanish town built into the cliffs.

The cathedral of a controversial, conservative, schismatic sect that declared the Catholic Church heretical and founded its own succession of popes.

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

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

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

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

An old wool-washing house filled with Fluxus contemporary art.

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

Perhaps the most spectacular grotto along the Algarve coastline.

Dead weights honor the dead of Portugal's fishing industry.

You can cross from one country to another in a single hop on this little bridge.