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

Staten Island's original central park is the former home of the city water supply as well as thousands of immigrant graves.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

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

A Wisconsin kitsch palace from the 1930s lives its second life in 21st-century Brooklyn.

Red frames showcase remnants of one of New York's original subway stations.

Hidden inside one of the world's most well-visited zoos is a secret plaque promising eternal life.

A burial ground of rusting metal grave markers.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Constructed in the 1920s, this former pencil factory is now an office building.

The Underground Railroad passed right through this historic Brooklyn Heights church.

Collect holy water from a Bronx grotto.

A collaborative art project that transformed a neighborhood in NYC's Queens.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

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

This neighborhood grocery houses a treasure trove of Eastern European delights.

A museum collection honoring the long history of the FDNY is held in a disused Manhattan fire house.

This was one of the first (and last) university-built and operated nuclear reactors.

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

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

The first and only carousel with a lineup entirely of insects.

Once America's longest-manned military fort, now an abandoned hulk.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”