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

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

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

Commemorating the spot where the famous scientist fed his pigeons.

A very classy 1920s-era bar right in Grand Central Station.

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

There are owls with glowing eyes in Herald Square.

On the top floor of an upscale department store stands a lavish restaurant housed in a replica of a luxury French dining car.

Detailed facade of a brownstone in Boerum Hill.

A whimsical, but often overlooked clock in Park Avenue.

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

The former sign of this immortal music venue is just that--undying.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

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

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

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

This innocent-looking townhome is actually a subway exit.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

As telephones become more essential and less stylish one historic Brooklyn building remembers the days when they were a grand celebration of communication.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Phil Mortillaro uses keys to bring art back to the Village.

New York City's smallest piece of private property.

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