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

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

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

When flour explodes, it's not a pretty sight.

The only arched bridge made of stone on the entire Mississippi River.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

The LSU mascot lived on the college campus in one of the most impressive tiger habitats in the country.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Three hundred years of preserved Spanish colonial history in San Antonio.

Inside this mountain lies several kilometers of breathtaking caves.

At 8,000 feet, the world's highest tea estate draws visitors for both its products and its panoramic views.

Rock-cut cave complex filled with ancient Buddhist artwork.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The second oldest continuously operating bar in Louisiana.

This "second" cemetery represents New Orleans' attempt to keep cholera at bay.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

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

Resting place of the Texas A&M canine mascots, who watch the game from the grave with their own miniature scoreboard.

The world's tallest statue of an American hero.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

An ancient iron pillar in Delhi that seems to be rustproof.