A hidden "place of interment for gentlemen."

This innocent-looking townhome is actually a subway exit.

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

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

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

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

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

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

A bit of retro transportation flair preserved in the world's largest department store.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

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

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Sniff the Titan Arum's rotting flesh.

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

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Mysterious 500-year-old tapestries depict a unicorn hunt.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.