8. The Secret Farley-Morgan Postal Tunnel Inside the James A. Farley Post Office
The Farley-Morgan tunnel under 9th avenue
One of the least known tunnels in New York City is the postal tunnel that runs under the east side of 9th avenue between the Morgan (mail) sorting facility and the basement of the James A. Farley post office. This heavily secured road tunnel was used to move mail to and from a special ‘secret’ platform at Penn Station, where letters and packages would be transported on Amtrak trains. Amtrak even had a special ‘mail only’ train for a few years, running along the northeast corridor.
They stopped hauling mail in the early 2000s, and the stairs and elevators to the platform were sealed shut. Also, check out other secret New York City tunnels.