Once a ferry dock, radio transmitter, and now a new Greenpoint park.

A hidden "place of interment for gentlemen."

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

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

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A mass grave for victims of one of the city’s worst fires.

Final resting place for the Triangle Shirtwaist fire’s unidentified victims.

The world's largest neutrino telescope searches for secrets of the universe at the South Pole.

360° views of the city plus five floors of optical illusions and hands-on science.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

The Boston square dedicated to the dark poet who was born nearby.

Despite not growing anywhere near New York City, bananas are ripened in a pressurized room in the Bronx using precise banana science.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Mount Nyiragongo has erupted at least 34 times since 1882 and is home to the world's largest lava lake.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

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

Come for the pastrami, stay for the million-dollar art.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Abandoned soda factory on a Cambodian roadside in a state of beautiful decay.