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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

This humble historic facade hides a history of boozing and the gentlemanly sport of rat-fighting.

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

Built just after the American Revolution, the oldest row house in New York City still stands in Chinatown.

Deep under Manhattan is the largest construction project in city history. So far, the project has taken the lives of 23 workers, or "a man a mile."

Sunset Park's Guatemalan community knows to head to the back of this bodega for a taste of home.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Harlem park dedicated to compulsive hoarders killed by their own junk.

A hidey-hole sandwiched between cellphone, DVD, and jewelry stores features Tibetan delights.

Snack on a partially gestated duck egg.

This neighborhood grocery houses a treasure trove of Eastern European delights.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

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

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A playground the size of a city block is a modernist monument to civic values and public housing.

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

This small New York museum celebrates the mountainous artwork of a Russian mystic.

Every dish is blessed in this basement eatery beneath a Hare Krishna temple.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.