Traditional Appalachian dances such as the Georgia Rang Tang and the Shoo-Fly Swing are kept alive at this weekly event.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The ruins of a monumental tower in the heart of Lebanese mountains still puzzle archeologists.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A slightly surreal menagerie of structures that were lovingly spared from demolition and reconstructed in a field.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

An abandoned socialist utopia built in the late 19th century.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

Charles Babbage's proto-computer, painstakingly brought to life.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The largest of London's subterranean rivers and once a mad, bad center of London life.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

What is left of the pillar of Saint Simeon, the voluntary martyr who climbed the column to give his sermons, remaining perched there for thirty-seven years.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

This ancient tomb in the West Bank is a holy site for Jews, Muslims, and Christians alike.

Mummies preserved naturally for seven centuries.

A 19th century pearling and fishing village abandoned before Qatar's economic boom.

Some of the ancient-looking huts among these strange rock formations aren't ancient at all, but built as part of a movie set.