The main concourse boasts a hidden staircase that’s used by Grand Central employees. You can see the brass cylinder that conceals the steel steps in the center of the information booth. En savoir plus .
Ride vintage wooden escalators dating back to 1902. Look for them on the Broadway side of the shop between the eighth and ninth floors. En savoir plus .
Your request for a book used to be shot throughout the building via giant brass pneumatic tubes. Now obsolete, the pipes can still be viewed at the clerk’s desk in the third-floor catalog room. En savoir plus .