> reporter: ravens ridge of kansas, site 11, a former atlas intercontinental ballistic missile silo. >> each half of this door weighs 16,000 pounds. >> reporter: a structure the u.s. government built with doomsday in mind. >> jfk was here? >> reporter: and which larry hall repurposed, imagining another doomsday. it's a luxury condo complex deep underground. >> we can go to the bottom of Get Live News Updates Every Minute from vimarsana.com Curated from 23000 News Agencies.">
> reporter: ravens ridge of kansas, site 11, a former atlas intercontinental ballistic missile silo. >> each half of this door weighs 16,000 pounds. >> reporter: a structure the u.s. government built with doomsday in mind. >> jfk was here? >> reporter: and which larry hall repurposed, imagining another doomsday. it's a luxury condo complex deep underground. >> we can go to the bottom of Get Live News Updates Every Minute from vimarsana.com Curated from 23000 News Agencies." property="og:description">
> reporter: ravens ridge of kansas, site 11, a former atlas intercontinental ballistic missile silo. >> each half of this door weighs 16,000 pounds. >> reporter: a structure the u.s. government built with doomsday in mind. >> jfk was here? >> reporter: and which larry hall repurposed, imagining another doomsday. it's a luxury condo complex deep underground. >> we can go to the bottom of Get Live News Updates Every Minute from vimarsana.com Curated from 23000 News Agencies.">
many people love it, but it got many people thinking what might happen in the event of an apocalypse. >> it has a large number of so-called preppers preparing for a catastrophe. you won't believe what kind of nest a million dollars and change can buy. we're "up all nightline" with abc's david wright. >> reporter: ravens ridge of kansas, site 11, a former atlas intercontinental ballistic missile silo. >> each half of this door weighs 16,000 pounds. >> reporter: a structure the u.s. government built with doomsday in mind. >> jfk was here? >> reporter: and which larry hall repurposed, imagining another doomsday. it's a luxury condo complex deep underground. >> we can go to the bottom of