An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

The phone booths of New York City have all but disappeared, but their remains were once found in this "graveyard," sadly now removed as well.

Test your business savvy and play the market for cocktails at this stock exchange-inspired watering hole.

A simple midtown bar was once the home of a secretive and exclusive club staffed by "bunnies" under Hefner's strict rules.

The saddest little diner in New York.

Visit the site of a subway powered by nothing more than air--and lots of it.

Walk over a 150 year old manhole.

Love is in the air along the small street in Brooklyn.

During the American Revolution, this mansion hosted failed peace talks between the British and Americans.

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

As telephones become more essential and less stylish one historic Brooklyn building remembers the days when they were a grand celebration of communication.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

A garment factory hides a small Dominican eatery in the hallway to its freight elevator.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

You don't have to be an ambassador to dine like one.

Behind a grungy bodega facade, a Poblano family serves rich, home-cooked meals.

These ornate manhole covers were used for a now-forgotten purpose.

Gang fights don't just happen on the streets, they happen under them too.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

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

A cargo of beautiful music.

In the middle of suburban Staten Island, a nearly 150-year-old bakery is preserving the art of a disappearing New York treat.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.