France's national museum of scientific and industrial instruments.

A mysterious stele of unknown origin sits on the peak of this curious mountain.

Morocco's Argania trees are infested with nut-hungry goats.

Home to drunken tower-climbing goats... seriously.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A museum and memorial built amid the rubble of a town obliterated by nature.

A library of rare occult books in Los Angeles.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This ancient city - home to nine civilizations - is soon to be buried under 200 feet of water.

Huge stone depressions which may have acted as an Incan agricultural experiment.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

A bunker "with enough U.S. currency to replenish the cash supply east of the Mississippi" in the event of nuclear war now protects nitrate film.

Wayne Newton's sprawling estate is now open for visitors to catch a glimpse of his "heart and soul."

An abandoned relic of the city's failed experiment with below ground transit.

Bangkok's men with dangerous jobs come here in search of protective talismans.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A legendary speakeasy bookstore returns from the brink.

Two stunning 17th-century libraries and a cabinet of curiosities.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

This little-known, 35,000-specimen collection in Greece is a lepidopterist's dream.