Beneath one of America’s most elegant resorts lies a secret built for the end of the world. During the height of the Cold War, the U.S. government secretly constructed a 112,000-square-foot nuclear bunker beneath the Greenbrier Resort in West Virginia — a hidden fortress designed to house the entire U.S. Congress after a nuclear strike.

For over three decades, this top-secret facility—known as Project Greek Island—remained fully operational, maintained by undercover technicians posing as TV repairmen, and disguised beneath the daily luxury of a five-star hotel. In this episode, we uncover how it was built, how it stayed hidden, and how one journalist’s 1992 exposé brought the entire operation to light.