Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Cryptic messages embedded in the New York City sidewalk.

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

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

The oldest surviving synagogue in New York City is now a soaring art space.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Peek through the gates at this oasis from the city, full of Old English charm.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A legendary speakeasy bookstore returns from the brink.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

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.

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

This secluded walking trail is a hidden gem of a Pittsburgh park.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

The ruined remains of a coal mining ghost town are hidden within the woods.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.