Protecting the future of some of the rarest and most misunderstood mammals of North America.

Cryptic messages embedded in the New York City sidewalk.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

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

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

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Prove you deserve to be fed by Kenny Shopsin.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

This semi-hidden Manhattan restaurant is based out of a loading dock.

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

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

One man's swirling six-acre monument of stone.

Lie in a hammock where George Washington stood.

Slyly buy a shake in the Parker Meridien lobby.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Mysterious 500-year-old tapestries depict a unicorn hunt.

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

A natural gas leak provides a flickering flame beneath a waterfall.