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

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

Mediterranean castle on a tiny Turkish island.

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

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

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

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

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

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

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

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

The eclectic home of a leading Turkish architect is a gorgeous piece of eye candy.

Quite possibly the oldest love poem known to humankind.

Ancient serpentine sacrifice holder that has stood the test of time.

Mausoleum and Holy Seat of Antiochus I of Commagene.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

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

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

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

A fountain standing as a testament to a doomed alliance.

Large miniature theme park with 100-plus models.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

Ottoman-era houses lovingly preserved.

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