The secret Cold War bunker hidden beneath The Greenbrier Resort
Strataca, the underground salt mine museum in Kansas
Seattle's buried original downtown
The remarkable Forestiere Underground Gardens in Fresno, California
Along the way, we'll discover how these places were created, why they still matter today, and why some of America's most memorable stories aren't only found on the skyline, but beneath it.
Whether you're planning your next road trip or simply love uncovering forgotten history, this episode will have you looking beneath your feet the next time you travel.
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