The ridged layers that make up this river canyon represent Earth's geological history.

This historic black and white monastery is one of Bulgaria's architectural jewels.

An abandoned saucer-shaped monument in the Bulgarian mountains.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

Crossing a suspension bridge above a forest is the only way to reach this 12th-century monastery.

Mysterious standing stone formations looks like a petrified forest.

This apartment is a true time capsule of local life in Bulgaria during the Soviet regime.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.

Giant stone letters dedicated to the founder of Armenia's alphabet.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

Hundreds of intricately carved Armenian stone crosses can be found within this huge cemetery.

Mausoleum and Holy Seat of Antiochus I of Commagene.

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

A charming beach town in Turkey captures all the colors of the rainbow.

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

According to local legends, the shallow sandbar that allows visitors to walk across Orhaniye Bay has a tragic backstory.

A Turkish ghost town abandoned in a population exchange with Greece.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Roman ruins, natural methane fires and a lovely beach.