See inside the survival shelter inspired by a Martian city and Ancient Rome and built for the super-rich. Plus, explore the ...

Tech billionaires are building luxury doomsday bunkers, according to a tell-all ... who often writes about the future of technology, said he was invited to a remote resort to talk with five ...

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The show's other major mystery is teased at the end of the season premiere — after a disastrous tsunami, the remnants of US civilization live in a futuristic bunker in a mountain. Sinatra ...