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.

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

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

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

Little Red Lighthouse under the George Washington Bridge.

Nature and beauty amidst pollution and industrial wreckage.

Phil Mortillaro uses keys to bring art back to the Village.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

New York City's smallest piece of private property.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This innocent-looking townhome is actually a subway exit.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

Lehigh Valley barge No. 79 still gets tugged along - but now it houses a museum and unusual performances.

One of only two remaining Victorian-era greenhouses in New York.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

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

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

A living archive of urban activism and space reclaimed.

Volunteer-run library dedicated to exploring five decades of activism history.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.