The Greenbrier Bunker, officially known as Project Greek Island, was a secret United States government continuity program facility located beneath the Greenbrier hotel in West Virginia. Built during the Cold War era, this underground bunker was designed to house and protect members of Congress in the event of a nuclear attack on Washington D.C. The facility remained operational from the 1960s until 1992, when its existence was publicly revealed by The Washington Post, leading to its decommissioning.
Today, the former bunker serves as a historical attraction and conference center, offering tours that showcase its Cold War-era architecture and purpose.