Did you Know? The Grand Central Terminal has whispering galleries.
One quiet little secret exists in Grand Central. The whispering gallery, also known as the whispering wall, is a modest secret that stands apart from the surrounding turmoil of city life. It is located on the less frenetic lower level and has no great fanfare to indicate its presence. Four arched entryways make a square shape in the whispering gallery. And if you whisper something into the arch and someone else stands 30 feet away with their ear to the arch diagonal from yours, they'll be able to clearly hear what you said — despite the distance and the acoustic deafening noise that is typical of Grand Central.