Mountain where Jesus was first tempted by the Devil.

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

Village situated on a narrow volcanic escarpment.

An independent naturist colony amidst 1000-year-old ruins.

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

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

A fiery-red region of scooped out land still largely untouched by civilization, tourists or otherwise.

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

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

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

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

Geological storytelling.

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

You can soak in three relaxing pools filled daily by the tide.

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

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

An isolated village literally built into the crevices and rock formations of a mountain.

A medieval village holds a very modern hotel.

Turntable anonymously received orphans, alms, and groceries.

Teeny tiny hotel on the coast of the Canary Islands.

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

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

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

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