A perfectly preserved abandoned criminal asylum in South Australia.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

For nearly 50 years this airplane that crashed during World War II remained missing in the remote Australian backcountry.

This crocodile-infested East Timor reservoir is also home to a spectacular half-sunken forest.

A spectacular impact crater in the rugged heart of Central Australia.

This large lake in Central Australia contains an estimated 600 million tons of salt.

The striking and little-touristed ruins of an ancient city destroyed and rebuilt by the Aztecs.

These "50 Fortresses" have been unearthed in the ancient oasis of Khwarezm.

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

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

This hidden fortress has been coined the "City of Ghosts."

Ukraine's oldest operating pharmacy now offers guests a fascinating walk through apothecary history.