Design is everywhere in our lives, perhaps most importantly in the places where we've just stopped noticing. 99% Invisible is a weekly exploration of the process and power of design and architecture. From award winning producer Roman Mars. Learn more at 99percentinvisible.org.
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There's a huge amount of subterranean space that we're not aware of around us all the time. For those of us who live in suburban and rural areas, it's not unlikely that one of your neighbors has a bunker underneath their house that you don't know about.