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

This Turkish cave boasts some rather bizarre associations with the King of Mount Olympus.

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

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 best-preserved ancient theater in the world.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

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

1513 Turkish world map, full of European state secrets and snarky commentary.

Roman ruins, natural methane fires and a lovely beach.

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

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

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

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

This crumbling industrial fortress has attracted daredevils, filmmakers, and historians.

Its columns were all carved from the same white oak tree.

Every year, the colorful murals of Montreal get a complete makeover.

A Montreal deli that was so beloved that it was allowed to circumvent their laws of language.

Montreal's giant farmer's market is a foodie's best friend, especially in the winter months.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

This 45-story tall abandoned skyscraper is the third tallest building in New Orleans and Lousiana.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.