The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

From scholastic to sepulchral - now under reconstruction.

Mysterious 500-year-old tapestries depict a unicorn hunt.

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

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

A legendary speakeasy bookstore returns from the brink.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A dilapidated dock tells the story of Titanic's missed arrival.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A Saint Nicholas-themed ghost town in the Mojave desert.

A vast city of the dead, where the deceased outnumber the living by more than a million.

Playable, historic pinball machines fill this Alameda museum.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

Hidden among the multi-million dollar mansions in the Santa Cruz hills is a sanctuary for troubled birds.

This odd California folly seems like it was almost designed to accumulate urban legends.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

A giant can of fruit cocktail is all that remains of what was once the world's largest cannery.

This quaint archive of the silent era preserves and pays homage to a seminal moment in film history.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

San Francisco Bay's ghost town.