This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

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

Once disputed as the largest sundial in the world.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

A historic lighthouse steeped in rumors of ghost and pirate stories.

The poet Walt Whitman was a frequent visitor to this spot, the highest on Long Island.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.