The famous author's cottage hideaway.

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

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

Visit the monolithic tomb of America's most famous general.

Ride the subways of yesteryear.

This was one of the first (and last) university-built and operated nuclear reactors.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

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

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

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

A celebration of capitalism in Midtown.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Sniff the Titan Arum's rotting flesh.

Read a book next to a Midtown waterfall.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Once a flowing stream and where the USS Monitor, the world's first ironclad, was built and launched.

Known as the "Forgotten City" it was home to industry, riots, artists, squatters, and to one of the largest single disaster fires in New York City.

The return of something once considered a basic part of life.

Constructed in the 1920s, this former pencil factory is now an office building.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

A crumbling hospital from the 1850s on Roosevelt Island.

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

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

Nature and beauty amidst pollution and industrial wreckage.