Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

Three-story slide through the New Museum.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

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

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The walls are decorated with whimsical murals painted by the creator of the Madeline franchise.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

A B.Y.O.B. Mexican cantina lives inside one of the last tortilla factories in Brooklyn.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

Crammed into several rooms of a Staten Island home, this museum is a vodka-soaked paean to the pleasures of drinking.

Here, exhibits come with a side of edible history.

A burial ground of rusting metal grave markers.

“Wagon Jobber" turned smokehouse magnate's family-owned business is still going strong 100 years later.

A young woman's senseless murder led to the controversial psychological theory of the "bystander effect."

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

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

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

Finally, you don't have to be a pious Swedish seaman to relax like one.