10. The Whispering Gallery

Probably the most well known hidden place inside Grand Central is the whispering gallery. Located between the Main Concourse and Vanderbilt Hall, the entertaining acoustic quirk of this 2,000-square-foot chamber is not apparently obvious. The design of the vaulted chamber creates a “telegraphing” effect which allows two people standing at opposite corners of the gallery to speak to each other as if they are standing right next to each other. It is not known if the gallery was intended to have this special feature, or if it the acoustics were an accidental architectural perk. It is one of several “whispering” galleries and benches in the city.

Join one of our upcoming Secrets of Grand Central Walking Tours to discover more hidden stories and spaces within the terminal while learning about the landmark’s over 100 years of history!

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Next, peek inside the not-so-hidden lost and found office, learn about the Test Stone Pillars for Grand Central Terminal in Van Cortlandt Park and find out if the Grand Central clock is really worth millions of dollars!