These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Red Hook's massive public pool, built by Robert Moses.

Lie in a hammock where George Washington stood.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

New York City's only preserved family home from the 19th century.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

Elevated freight railway turned wildly successful urban park.

An artist's cute bronze subway sculptures belie his violent artistic past.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

Renowned restaurant tucked in a cave once occupied by buccaneers.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

The most confusing clock in New York.

Red frames showcase remnants of one of New York's original subway stations.

A posh members-only club with a literally dramatic history.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

One of only two remaining Victorian-era greenhouses in New York.

A curious friendship between two inanimate ladies.

One of only two commuter aerial tramways in the United States.

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