The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

An acoustic anomaly with a mysterious cause.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Jurassic theme park in the small town of Erlian.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

London's largest outsider art museum.

Ride the subways of yesteryear.

America's only nuclear missile silo open to the public.

A huge museum of much more than just agriculture displayed in a princess's palace.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The Natural History Museum that time forgot.

Canada's subterranean Cold War museum has doubled as a movie set.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

Fantastic collection celebrating the final send-off.

Eclectic collection of rare and beautiful stones in a historic home.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

This striking art museum holds an amazing series of curiosity cabinets.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

Shop of curiosities with a dinosaur museum tucked in its basement.

Astounding collection of coin-operated games and automata.

Australian museum dedicated to human health and lack thereof.