This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

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

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

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

The "Seinfeld" diner.

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

One of only two commuter aerial tramways in the United States.

A crumbling hospital from the 1850s on Roosevelt Island.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

An elaborate memorial to a man local legend says died of a broken heart.

The site of William McKinley's tragic assassination is only marked by an underwhelming boulder.