Holding the most bodies of any cemetery in the United States.

This former water source for the City of Brooklyn is now a thriving natural wetland.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

This landmark building is now a vibrant performing arts space with musical acts from around the world.

Behind these delicious arepas lies a true New York success story.

Guerilla gardeners reclaimed this abandoned railroad land literally putting down roots.

This outdoor gallery of sculptures along the East River was once a landfill.

The oldest living organism in New York City. Maybe.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

Two New York rooftops are home to the largest rooftop soil farms in the world.

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.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Where the Monitor was launched and ushered in the age of the "ironclads."

Compensation for the destruction of a historic shipyard.

If you were standing here on October 5th, 1950, you'd be dead.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

The mass grave of a heroic Revolutionary War regiment sits below an empty lot near the Gowanus Canal.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

One-time largest man-made structure in the world will be a park in 30 years.

The pioneering photographer's prints are immortalized inside her childhood home.

This reconstructed Revolutionary War-era residence marks the first major battle after the Declaration of Independence

Neoclassical bank designed by NY architects Helmle & Huberty.

Historic Greenpoint theater turned roller disco, then chain pharmacy, and now Sweetgreen.