A couple converted a Kansas nuclear missile silo into a bizarre 18,000-square-foot castle, and now it's on the market for $3.2 million — see inside

· A couple spent 30 years renovating a nuclear missile silo into an underground castle.
· Now, the Kansas property is for sale for $3.2 million.
· These photos show inside the stunning property.
· Visit Business Insider's homepage for more stories.

Kansas probably isn't where you'd first look if you're in the market for...