A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

New York's oldest and possibly grandest keeper of books.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

Final resting place of the immigrant who brought artificial seltzer water to America.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

Play heads or tails with thousands of different coins.

An artist's cute bronze subway sculptures belie his violent artistic past.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

Filled with history, this cemetery is maintained each summer by a few hungry goats.

This 150-year-old train station and caboose have been turned into a railroad museum, enjoyed by young and old alike.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

This old-fashioned candy shop, ice cream parlor, and diner served as the setting for one of TV's most controversial series finales.

A world-class collection of mechanical musical instruments and automata.