This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

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

Final resting place for the Triangle Shirtwaist fire’s unidentified victims.

Residents of this Brooklyn neighborhood may be unaware their houses sit atop a buried trolley graveyard.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Two New York rooftops are home to the largest rooftop soil farms in the world.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

The saddest little diner in New York.

A slanted tomb honors the faithful, furry companion of the Georgia Tech student body.

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

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

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

Bowl in splendor, if you're lucky.

See just what life was like in a 19th-century prospecting town.

One of the best-preserved wooden manor houses in Latvia, decorated with painted interior walls.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

The best B-movies filmed on a shoestring budget were born here.

Sip coffee and talk politics at this landmark cafe in Astoria's Little Egypt, a contender for the title of America's first hookah bar.

Despite not growing anywhere near New York City, bananas are ripened in a pressurized room in the Bronx using precise banana science.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

On this island, you suck away your garbage via an elaborate pneumatic tube system.