This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

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

A crumbling hospital from the 1850s on Roosevelt Island.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

The final resting place of an outlaw, whose legend grew after death.

The final resting place of infamous outlaw Clyde and Marvin Barrow.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

The site where Joe Gallo kept his guns, pet lion, and launched an all out mob war in 1960s Brooklyn.

Nondescript elevator doors open to reveal a stunning, surreal world.

During the holidays, a vintage subway train whisks New Yorkers back in time.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

Historic Greenpoint theater, turned roller disco, now housing a chain pharmacy store.

A quick trip around the globe through an amazing miniature exhibit.

Townhouse facade doubles as an RMS Titanic Memorial.

The phone booths of New York City have all but disappeared, but their remains were once found in this "graveyard," sadly now removed as well.

A simple midtown bar was once the home of a secretive and exclusive club staffed by "bunnies" under Hefner's strict rules.

This tiny store is your one-stop shop for all sorts of rare and wonderful buttons.

A veritable variety of odds and ends.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Tucked in the back of this amazing antique store is an important piece of medical history.

A small graveyard is hidden in the midst of a bustling university campus.

2 square block factory in Greenpoint erected in 1936.

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.