When I was a kid I always wanted to stumble upon a discovery that would be historic. My friends and I would dig through neighbors’ yards in search of buried treasure and eventually, I realized that would never happen, but the sheer idea of finding a secret hidden beneath the ground always captivated me.

If you are fascinated by underground secrets then you will probably find this amazing.

Believe it or not, there is a secret, underground tunnel that is hidden beneath the streets of New York City.

It’s been named the Atlantic Avenue Tunnel and many have no idea they’re walking directly over it every day while walking along the streets.

The tunnel was built in 1844 by Cornelius Vanderbilt in what would be the first attempt ever at a subway.

The story goes that Irish immigrants did work on the tunnel but when a British contractor let it be known that they would need to work on Sundays (missing church in the process), an immigrant shot the contractor, and legend has it he was buried behind a tunnel wall. Does that body still remain there today? Or the skeletons of that body?

The tunnel was never finished and capped off by workers in the 1850s and it went unnoticed until the 1980s when it was rediscovered by a man named Bob Diamond, who had to go down a manhole cover and breakthrough dirt and brick to reach the tunnel. He stumbled upon its location after looking at old blueprints.

Tours were done but now, the tunnel is closed off to the public (presumably for safety hazards) but there are rumors that there is still an old brass locomotive buried beneath the ground and somewhere in the old tunnel system.

I think this is all so fascinating. Imagine being the first, or one of the first, people to go down there and rediscover something that was sitting untouched by humans for 130 years. That’s so cool.

25 True Crime Locations: What Do They Look Like Today?

Below, find out where 25 of the most infamous crimes in history took place — and what the locations are used for today. (If they’ve been left standing.)

LOOK: See the iconic cars that debuted the year you were born

How Many in America: From Guns to Ghost Towns

Can you take a guess as to how many public schools are in the U.S.? Do you have any clue as to how many billionaires might be residing there? Read on to find out—and learn a thing or two about each of these selection’s cultural significance and legacy along the way.

KEEP READING: Here are the best places to retire in America