The seamy, underground secrets of Portland's criminal past.

Records of the dead describe the myriad odd ways people used to die.

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

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

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

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

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 discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

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

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

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

“Invented in Key West, Perfected in Brooklyn."

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

This innocent-looking townhome is actually a subway exit.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

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."

The famous author's cottage hideaway.

Wine bottle sculpture with a ship's stateroom inside.

A bit of retro transportation flair preserved in the world's largest department store.

Lie in a hammock where George Washington stood.