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

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

This hidden collection of everyday objects illustrates life within communist Poland.

A national collection of Communist-era musical posters.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

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

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

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

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

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

Oldest unrestored plantation house in America that is open to the public.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A museum dedicated to the alleged Roswell Incident.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

The final resting place of New Orleans' most famous voodoo priestess.

An overlooked memorial honoring the local Washington residents who died in World War I.

Look closely and you’ll notice that the color changes a third of the way up the tower.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.