The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

Secret North Korean passage discovered below the world's most dangerous border.

South Korea's largely symbolic, barely used gateway to the North.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

A symbol of hope, survival, and national character, especially after it rose phoenix like from the flames.

Ancient pueblos built into the base of a natural canyon wall.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

Crafted in 1911, this steam locomotive spent its entire working life in Flagstaff.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A kaleidoscope gallery and steampunk emporium named for a pioneering journalist.

Inside this store, a mysterious statue draws visitors from the world over.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

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

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.