A small part of lower Manhattan is actually made from a bit of England.

The largest known open fault in the United States is basically a giant natural refrigerator.

The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

This small road tunnel is the only place where you can cross beneath the Erie Canal.

A mysterious air force base built to resemble a Long Island fishing village.

This seemingly unremarkable boulder is said to bear the hoofprint of the devil himself.

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

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

Recovered suit of a cannibalistic West African gang.

An 1883 schoolhouse now home to collective of artists.

HBO series' stage tucked away in a Greenpoint lot is the largest theatrical set of its kind in the United States.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

The oldest living organism in New York City. Maybe.

Astonishing collection of helmets, scientific instruments, and medical models.

The rustic think-space of famed naturalist John Burroughs stands exactly as he left it.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

The oldest pastificio in Queens offers visitors fresh noodles and a peek inside the macaroni-making magic.

This small Catskills village has six independent bookstores and more bookshops than restaurants.

A historic recreation of the golden age of the Erie Canal, abandoned for some time, slowly being restored.

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

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.