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

One of the most exquisite Lycian hilltop citadels in Turkey.

A small mountain at the crossroads of Turkey, Iraq, and Syria that some believe was the landing point of Noah's Ark.

These ruins once flourished as the capital of the Lydian kingdom, often credited with the invention of metal coinage.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

A section of the long chain that blocked enemy ships from entering Constantinople.

This mysterious cliffside carving of an ancient Hittite deity has baffled scholars for centuries.

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

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

The ancient latrines of the Greeks, in all their public glory.

Seven early Christians were sealed into a cave where legend has it they slept unharmed for centuries.

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

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

Mausoleum and Holy Seat of Antiochus I of Commagene.

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

A Turkish monastery tucked into a cliff wall.

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.

Roman ruins, natural methane fires and a lovely beach.

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

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

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