The Secret Tunnel

Underneath the Waldorf Astoria. lies a secret railway platform called platform 61 or the Roosevelt platform. 
It was created and used privately to enter the Waldorf Hotel, without crossing through Grand Central Station in New York City.
The first person to use it was army general John Pershing in 1938.
President Franklin D. Roosevelt used it in 1944, while he was trying to conceal the fact he used a wheel chair.
His armored presidential train is still there.
The platform as just about always been closed to the public.
Photographers use to have the cameras smashed and film ruined for attempting to take pictures there.