This mouldering abandoned mental hospital was once a center for progressive healing.

Connecticut sites linked to the only trial to ever use demonic possession as a criminal defense.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A Catholicism-themed restaurant where sacrilege is on the menu.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Yugoslavia's biggest underground airport lies in ruins.

Historic psychiatric asylum and most-filmed location in the Great White North.

A formerly abandoned mental institute, now back in business.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

A huge musical instrument played by the ocean.

A musical instrument played by the sea.

Dynamite factory turned museum explores the history of explosives.

This majestic building, where Brazil's coffee brokers once bought and sold beans, now houses a coffee museum.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

This memorial marks the devastating day that Texas City was destroyed in a daisy chain of exploding ships.

The most alien-looking place on Earth.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

Comprehensive gaming collection of over 30,000 electronic games and consoles.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.