Railroad came. People came. Railroad left. Town died.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Home of an evil witch famous within southern folklore.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

At the time of its completion, it was the tallest dam in the world.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

An odd and heartwarming stone marker enshrines the moment a community saved a farmer's pig that fell in a well.

This monument remembers one of the manliest men of the frontier who fought a grizzly before dragging himself 200 miles to safety.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

This mining town boomed in the Atomic Age when uranium was gold, only to be abandoned when the industry collapsed.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A student driver's nightmare.

One part local history, 99 parts gruesome haunted house.

Hidden beneath the streets of London is a secret subway that only carried mail.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

Natural earth mounds formed in the far north.