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

For over a century, it was a crucial center of mental health treatment and also the source of many local legends.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

An abandoned asylum where patients have been forgotten but their possessions remain.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

An unrealized dream to wirelessly electrify the entire Earth.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The wild west is still alive and well at this authentic mining town watering hole.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

An abandoned asylum incorporated into a college campus.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The site of a tragic massacre that spawned a multimedia franchise.

A formerly abandoned mental institute, now back in business.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A long abandoned hospital building on the outskirts of NYC.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.