This indoor ski resort has a mountain contained inside a mall.

Whitewashed mosque contains the world's largest carpet.

Billed as the "largest natural flower garden in the world" this Middle Eastern show field has little competition at 45 million flowers.

Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.

Yemen's "Stone Palace" looks like it was carved right out of the tall stone column on which it is built.

A city built from mud and known as the "Manhattan of the desert."

The most alien-looking place on Earth.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

Foreign invaders almost left this lovely Caucasus palace alone—almost.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

A shrine of fire worship built on top of a natural flame.

Spring that emits water and fire at the same time is said to have remedial properties, and sparked its own religion.

Resonant stone, that has been played since prehistoric times.

Mysterious hillside with a continuously burning natural fire.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

The first skyscraper to include a Ferris wheel built into the facade.

Underground monastery and fortress.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

Burial site of a Jewish prophet revered in Iran.

These little castles each held thousands of pigeons.

This vast, water-filled underground labyrinth can only be toured by boat.

17th century mosque for Shah Abbas' harem.