This nine-story building can be played like an instrument.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

4,000 monkeys used for medical testing on an island off of South Carolina.

So many migrating birds roost on the bridge, it has a special summer speed limit.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

A theme park featuring a replica of Noah's Ark built to the measurements specified in the Bible.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

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

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

Take an otherworldly journey in a school dedicated to out-of-body experiences.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

An eerie, decaying ghost town destined to fade into the forest.

This former asylum for Black Americans is haunted by its history of violence and racism.

A priceless collection of the Nation's cryptologic history.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A decaying garage hidden amid the dense forest is all that remains of a once-prosperous dairy farm.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

An astounding collection of medical specimens, including bits of President Lincoln.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

People escaping slavery may have hidden inside a corpse vault.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.