Commemorating the spot where the famous scientist fed his pigeons.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

If it hadn't been caught in time, a flaw in the design of this Manhattan skyscraper could have led to its collapse.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

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

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

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

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

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

New York City's smallest piece of private property.

This slender three-story building has also had several famous residents.

Those belting out show tunes might not realize this piano bar marks the site where Thomas Paine died in 1809.

New York City's first Modernist house.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

This Manhattan skyscraper is a reminder of the brief but glorious age of urban air taxis.

A tribute to the hard-working men and women of Grumman, who crafted F-14 fighter jets.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

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

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

An unrealized dream to wirelessly electrify the entire Earth.

The first commercial nuclear power plant constructed on Long Island.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.