Hidden just under the waters around this Turkish island are the ruins of a once great city.

Flames have been burning within this mountain for more than 2,500 years.

This arch granting triumphal entrance into Antalya was designed to honor the emperor's visit.

The best-preserved ancient theater in the world.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

Naturally protected city carved from a rock face.

This hidden gem is bathed in beautiful natural light.

A beautiful 19th-century Armenian mansion is preserved above an unassuming cafe.

This ancient city - home to nine civilizations - is soon to be buried under 200 feet of water.

An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

The observation point offers spectacular views of the ruins of an ancient Armenian capital.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

A geological oddity topped with a 2,000-year-old pagan temple.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

The decaying remains of a once-luxurious Soviet spa town.

Underground monastery and fortress.

Fast food feels like fine dining at this award-winning modern Georgian building.

A Turkish monastery tucked into a cliff wall.

The ancient abodes are a testament to human ingenuity amid harsh climates.

A sacred lake with thousands of sacred carp and a biblical history.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

One of the largest single-span stone-arch bridges in the Balkans looks like something straight out of a fairytale.