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

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

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A sixth-century Byzantine cistern hidden below a modern carpet store.

Mausoleum and Holy Seat of Antiochus I of Commagene.

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

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

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

The best-preserved ancient theater in the world.

Step back in time and witness the fall of Constantinople.

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

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

Ottoman-era houses lovingly preserved.

1513 Turkish world map, full of European state secrets and snarky commentary.

This eatery re-creates dishes from the Ottoman Empire so you can dine like a sultan.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

Naturally protected city carved from a rock face.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

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

The ornate miniature mansions were built for Istanbul's feathered residents.

An abused and forgotten metropolis, abandoned for centuries.

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