The remnants of a facade from a 19th-century market stall emporium.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

The highest monastery in the world operates a tiny guesthouse with doors open to all.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Charnel house at the foot of Mount Sinai.

Ozymandias’ time-keeping temple.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Traditional 11th-century outdoor tannery.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The other side is actually green.

The soaring gondola lines form the longest aerial cable car system in the world.

Mountain of unimaginable riches that bankrolled the Spanish Empire, complete with its own underworld god.

A valley of unique erosion patterns lends to a view like nothing on Earth.

This red lake 4,000 meters above sea level is home to rare flamingos.

Bolivia's needle-like rock formations.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

A seemingly endless landscape of pure salt stretches far across Bolivia.

As one of the world's largest hydroelectric dams this plant took two countries to get built.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.