Stone shrouds of Prince Liu Sheng and Princess Dou Wan of the Han Dynasty, created to preserve their flesh for eternity.

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

At the "Garage Mahal" in Houston, car culture is about more than just driving.

Special tunnels built so that frogs won't be killed when crossing the highway.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Obelisks and stone pineapples in the Irish countryside.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Remote, volcanic island that Darwin, Hooker, and the Royal Navy shaped into a thriving, artificial ecosystem.

Repository for more than 22 million pickled specimens.

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

Massive kielbasa stands 42 feet tall and weighs in at 12,000 pounds.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

Largest pre-Lent festival in the Dominican Republic.

Go inside to really appreciate this 500-year-old technological masterpiece.

Dive bar built out of the remains of a whaling ship.

Eighteen miniature death-scene dioramas.

Earth's greatest purely vertical drop at 4,101 feet.

Half of a waterfall goes into the river while the other half seems to disappear.

Collective dedicated to restoring steam engines.

Only two of these trees remain in the natural world, found high in the cloud forest of the island of Mauritius.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

Walk through depictions of the torture inflicted on those who go to Buddhist hell.