The ruins of an ancient Zoroastrian Tower of Silence believed to be the earliest example of the traditional funerary practice.

Former island in the Aral Sea used to be a top-secret Russian bio-weapons facility.

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

Light still pours into the ruins of this ancient Islamic observatory.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The Avenue of Mausolea is a series of grand palatial tombs.

Nightmarish example of the unintended consequences of weapons testing.

You'll find rocket launchers, not rollercoasters, at Russia's “military Disneyland.”

Unusual, mushroom-like rock formations caused by weathering and water erosion, set to disappear, according to geologists.