Here be dragons.

Once a month, an Indonesian feast appears inside an Elmhurst church hall.

This Catskills museum preserves stumps from the earliest known fossil forest on Earth.

This Russian bar-restaurant lies within a three-story underground bathhouse.

A cargo of beautiful music.

New York City's only wildlife rehabilitation center treats more than 3,000 feathered and furry patients each year.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

HBO series' stage tucked away in a Greenpoint lot is the largest theatrical set of its kind in the United States.

This throwback amusement park is home to rides and unique storybook figures from the past.

Once a popular watering hole among longshoremen and shipyard workers, this neighborhood treasure spans more than 100 years of Red Hook history.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

This abandoned factory on the Hudson River once churned out a million bricks a week.

A working metal shop and venue for outrageous art and music shows in a former cannonball factory.

19th century cemetery hidden in Brooklyn's Prospect Park.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

This collection of grinning ephemera has grown from basement to Brooklyn.

A bit of retro transportation flair preserved in the world's largest department store.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

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

The "Seinfeld" diner.

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

A New York garbage depot holds a secret collection of weird and wonderful refuse.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.