Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

A dreamy mausoleum honors Persia's most famous poet.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

Ancient structures used to make and preserve ice in the deserts of Persia.

An unusual and powerful memorial in which earthquake victims are remembered by empty white chairs.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

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.

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

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

Underground monastery and fortress.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

A museum glorifying the life of Stalin, located in the city of his birth.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

Ancient rock-hewn town that witnessed key events of Georgian history.

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

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

Resonant stone, that has been played since prehistoric times.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

Mysterious hillside with a continuously burning natural fire.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

This circular Iranian jail was once a political prison run by the country's secret police.

Marked by the hand of the explorer Henry Morton Stanley.