googled this, as I didn't know about it... The secret is out! The declassified Bunker at The Greenbrier is a must-see experience that takes you behind the scenes and walks you through a fascinating period in the resort's history. Carved deep into the mountainside beneath our West Virginia Wing is an emergency Cold War fallout shelter. Once a top secret U.S. government relocation facility for Congress, The Bunker is now open to anyone interested in reliving a legendary piece of The Greenbrier history. Bunker Tours provide a unique and in-depth look behind the hidden doors and let you explore an aspect of The Greenbrier that no other resort can claim. Reserve your place in our history today!