5,000 skulls in memorial to those killed by the Khmer Rouge.

A former French military respite turned jungle tourism hotspot.

A battle between nature and architecture in the Cambodian jungle.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

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

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

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

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.

One man’s collection of photography books has transformed into a charming exhibition space.

You'll find just about anything in this funky Tbilisi flea market.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

The decaying remains of a once-luxurious Soviet spa town.

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

Fortified homes of highland warriors that are still in use today.

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

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

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

These Stalin-era industrial 'death traps' hang lifeless above the city