This famous city eluded concrete detection until the early 2000's.

This Turkish cave boasts some rather bizarre associations with the King of Mount Olympus.

Roman ruins top white travertine terraces formed by ancient hot springs.

Fantastic lake on the heart of a fault line.

Ottoman-era houses lovingly preserved.

Hundreds of stones dangle from barren trees in the middle of the desert.

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

Leaking natural gas never stops burning on this hill, making it an infinite inferno.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

This vast, water-filled underground labyrinth can only be toured by boat.

A 1,500-year-old, 3-story subterranean city where ancient Persians took refuge in times of war.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

This ancient fortress in Iran was once the oldest and largest treasury in the world.

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

Iran's colorful terraces are a rare geological masterpiece.

This harsh mountain path was built as a strange attempt to improve the health of Turkmen citizens.

Sumptous memorial to a controversial independence.

The controversial final resting place of the equally controversial first president of Turkmenistan.

This cavernous swimming spot doubles as a home to the largest known colony of bats in Central Asia.

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

A cave covered with bizarre stalactites of cloth.

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

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

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