Mysterious spherical rocks in the semi-desert of western Kazakhstan.

At 72 feet below sea level, it's the lowest commercial airport in the world.

Tucked away along a riverbend in an area known for its uranium mines is one of the world's tallest locks.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

An entertainment center in a huge transparent tent.

The world's second-tallest flagpole stands proud despite dropping rank.

The heartbeat of modern Uzbekistan’s thriving market culture.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

Giant cauldrons overflow with Uzbekistan's favorite rice dish at this cavernous dining hall.

A collection of Lenin busts and other Soviet Era statues sit idly behind the Semipalatinsk Hotel.

This unique wooden mosque resembling a Chinese pagoda was said to be built without the use of nails.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

This hulking behemoth is actually five interconnected towers built in the 1960s.

The remains of a monument in the remote Kazakhstani desert dedicated to the only men to die in outer space, the crew of the Soyuz 11 rocket.

Lonely minaret stump of a destroyed city.

A slice of central Asia in the middle of Berlin.

A fiery crater has been burning in the Karakum Desert since 1971.

Ancient barriers wrap around what was once an important stop along the Silk Road.

Home to what was once considered the largest gate in central Asia.

The largest dam in the world and the site of a potential disaster.

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

These oldest of these "embroidered stones" were carved 4,000 years ago in a high mountain valley.

This mysterious complex of abandoned yurts and fading murals was meant to be a center of science and spirituality in Kyrgyzstan.