Small shop offering mail-order rare and exotic plants.

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

The remains of diamond fever taken over by the desert.

The loneliest island in New York.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

Come for the flowers, stay for the bats!

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A simple Colonial home with a past haunted by death and madness.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

This landmark cemetery in Boston was created more than 300 years ago.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

Underground tunnels remain beneath this abandoned mental asylum.

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

Once a farm where patients tilled the soil, this asylum lost its workforce when overmedicating became common practice.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

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

A formerly abandoned mental institute, now back in business.

An abandoned asylum incorporated into a college campus.

The decaying ruins of Wales' first asylum for the mentally ill.

Former self-sufficient mental institution now a planned community.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.