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

Roman ruins, natural methane fires and a lovely beach.

A meow-velous tribute to a beloved street cat, made famous on the internet.

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

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

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

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

An abused and forgotten metropolis, abandoned for centuries.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Roman ruins top white travertine terraces formed by ancient hot springs.

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

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The steepest classic funicular in the world glides along a dizzying incline.

This small museum displays a collection of outsider art and scale models of past "treatments" for mental illness.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

This statue of a Hindu cosmic dancer at CERN is a metaphor for modern physics.

The loneliest island in New York.

A museum that houses the world's largest collection of ventriloquism dummies.

Where beautiful signs live on forever.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A haunting collection of the vanished and disappearing natural world.