Salute the leader of the proletariat.

There must be a pun in this haystack somewhere...

Commemorating the spot where the famous scientist fed his pigeons.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Plot your trip through the city on the sidewalk.

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

Detailed facade of a brownstone in Boerum Hill.

A bit of retro transportation flair preserved in the world's largest department store.

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

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.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A celebration of capitalism in Midtown.

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

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

New York City's smallest piece of private property.

A hands-on traveling collection of the innovative devices of yesteryear.

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

Elevated freight railway turned wildly successful urban park.

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

A terrific purveyor of natural history objects and curios.