Mediterranean castle on a tiny Turkish island.

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

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

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

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

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

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

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

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

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.

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

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.

A fountain standing as a testament to a doomed alliance.

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

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

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

A Turkish monastery tucked into a cliff wall.

Roman ruins, natural methane fires and a lovely beach.

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

Large miniature theme park with 100-plus models.

The best-preserved ancient theater in the world.

Ottoman-era houses lovingly preserved.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

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