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Billionaire bunkers – discreet, fortified, and increasingly designed to function as self-contained worlds – are fast becoming a new asset class. What was once the domain of Cold War paranoia and fringe survivalists has been rebranded for a post-pandemic, climate-anxious elite. Think less tinned food and tin foil hats, more filtered air systems, biometric access, and, yes, staff quarters, in case the apocalypse arrives with a dress code.
