San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

At this monastery, monks make raw-milk cheese and use excess whey to create methane that powers their hot-water system.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

A breathtaking and biodiverse wilderness in the mountain setting of Ernest Hemingway's "For Whom the Bell Tolls."

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

Inside this community-run museum, visitors are treated to the history of toys and games.

The world’s largest underground marble quarry is hiding in Vermont.

The summer home and later final residence of acclaimed American sculptor Augustus Saint-Gaudens.

Antique gaffe kept in the basement of a small Vermont natural history museum.

These quaint French houses dangle precariously over a precipice.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

A historic observatory precariously perched at the "Top of Europe."

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

An abandoned underground bathroom is now a space for public art.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

A lawless town deep in Death Valley was famous for its riches and death rate.

When he found his hometown was no more, Lowell Davis decided to recreate a "new" ghost town from scratch.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This once-derelict building is now one of the most beautiful bookstores in the world.