Once the domain of fringe survivalists and doomsday preppers ... associated with billionaires and tech moguls, affordable underground shelters are also becoming more accessible to regular people.

There can be a lot of variation in the pricing, but none of it is particularly affordable ... bunker, you'll want to look around for reputable, certified builders. Some big names in the doomsday ...

Despite the planning snags, social media users have brainstormed a wide variety of possible uses for the bunker. “That would be good for a content creator that focuses on [doomsday] prepping ...

Narrator: Doomsday prepping isn't a new idea. In the '50s and '60s, houses were built with bunkers, and shelters started popping up during the Cold War. Today's preppers have plenty of survival ...

The Survival Condo Project in Kansas is a doomsday bunker built for millionaires. Check out the luxury survival community within an old missile silo. Follow BI Video: On Twitter More from Military ...

A bunker-style house that has landed on the real estate market in Liberty Hill, Texas, might be the perfect fit in that case. “Built with doomsday preparedness in mind, this bunker-style ...

"DOOMSDAY BUNKERS" pulls back the curtain on advanced and secretive underground bunkers -- impenetrable safety zones - that feature the ultimate in security, comfort, and cutting edge design and ...