Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

It's 2 billion years old!

Staves, storm-calling, and of course, necropants.

The latest in a series of long glass bridges suspended at terrifying heights.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

This grand gothic brewery has been pumping out suds for over a hundred years.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

All that's left of the quintessential "cabin in the woods."

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.

This Great Depression-era creation was once known as the strangest house in the world.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The traditional Polish croissant, folded 81 times into the shape of a horseshoe, is a legally protected cultural treat.

Lie in a hammock where George Washington stood.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Gutted airplanes slowly decay in a Florida field.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Enormous lake at the bottom of a unique cave system.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

A delightful park featuring homemade scale replicas of dinosaurs, tucked away in the Tennessee mountains.

Home of an evil witch famous within southern folklore.