A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A wunderkammer of mysterious objects and stories.

The site of a mysterious pony massacre is rich with extraterrestrial conspiracy theories.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

This professional clown's home is an outsider art wonderland.

A real-life Professor Snape once taught in this Welsh university building, which students of course nicknamed “Hogwarts.”

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

The site of the first "historically true" UFO encounter in the U.S.

From under the bed of one of the co-founders, this server helped launch the notorious file-sharing website.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

Once a black market electronics marketplace, now an otaku shopper's paradise.

A disconnected rotary phone for "calling" lost loved ones offered a unique way of dealing with grief in disaster-stricken Japan.

The near loss of the stately fireplaces at this medieval castle spawned some of Britain's most crucial historic preservation laws.

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

Fighting the British and making game shows for over 150 years.

Statue of a decomposing prince that once held his heart in its hand.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

An ancient monastery, a locked room, and a mysterious book heist.

This museum promotes informed contraception by documenting its often secret past.