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

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The famous author's cottage hideaway.

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

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.