Four cars from the old system were once on display, but were removed in 2014.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

NYC's legendary underground network for bovine transportation.

Visit the site of a subway powered by nothing more than air--and lots of it.

Three-story slide through the New Museum.

Walk over a 150 year old manhole.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

This theater opened in 1998, but both the building and the puppeteers who perform there have a distinguished history.

This suburban enclave is home to a very unique art exhibit.

The site of a fallen tree that protected Americans from British forces during the American Revolution.

A small graveyard is hidden in the midst of a bustling university campus.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

An unassuming stone building houses New York City's oldest seismic station almost 30 feet below the Bronx.

An activist who committed her life to peace and women's suffrage.

If you were standing here on October 5th, 1950, you'd be dead.

This metal eagle one of the final remnants of a newspaper that wanted to keep Brooklyn to Brooklyn.

The graveyard holds the remains of Irish immigrants who arrived in Queens after fleeing the Great Famine.

No monkeying around, this fountain was really named after the classic sci-fi film.

Where the legendary Orson Welles got his theatrical start before "Citizen Kane."

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

Here be dragons.

This abandoned artificial island off the coast of New York City is now home to dozens of harbor seals.

Retribution for death of infamous mob boss Franie Yale was a case of mistaken identity.