This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

The leathery remains of a woman who died in the 13th century now lie in a church named for her.

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.

This medieval wine press is one of the oldest in Cyprus.

More gold than anywhere else, ever.

An abandoned town is hidden in Great Smoky Mountains National Park.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

At the point of oceanic inaccessibility, you can't get farther from dry land without leaving the planet.

This "cursed house" features secret rooms, hidden vaults, and dark escape tunnels.

An automaton perched above an classic clock and watch store

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.

A clerical error gave rise to this imaginary micronation in the southwestern corner of Estonia.

An underground nightclub helped spark a "Singing Revolution."

Some of the Old West's most notorious outlaws frequented this mining town.

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

This small shop walked so America could run on Dunkin'.

This Cold War–era fallout shelter was actually a storage facility for the nation's emergency currency.

Transport yourself to the 1980s era of video games at this themed restaurant and bar.

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

This Central New York ghost town was once a prosperous railroad community.