Eccentric concrete mansion and museum designed and built by hand from the inside out.

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

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

A crumbling hospital from the 1850s on Roosevelt Island.

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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

An abandoned asylum incorporated into a college campus.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

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

An abandoned stretch of highway, deteriorating next to the operational one.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

Once the world's largest reinforced concrete structure, this abandoned bridge now beckons urban explorers.

A recently abandoned psych ward at the end of Sanatorium Road.

An abandoned castle owned and ignored by Masons carries a cursed history.

This Central New York ghost town was once a prosperous railroad community.

This once luxurious Catskills resort is now a haunting ruin.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

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

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