Elevated freight railway turned wildly successful urban park.

This slender three-story building has also had several famous residents.

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

The first piece of public art dedicated to LGBT rights.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

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

A quick trip around the globe through an amazing miniature exhibit.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

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

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

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

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

A young woman's senseless murder led to the controversial psychological theory of the "bystander effect."

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.