The American family who built a doomsday castle to survive the apocalypse.

The Chinese man who built his own version of Noah's Ark.
The Chinese man who built his own version of Noah's Ark.

The $ 2 million condos in Kansas dubbed the most luxurious way to sit out the apocalypse.
The $ 2 million condos in Kansas dubbed the most luxurious way to sit out the apocalypse.

The $60,000 corrugated pipe bunker that was created to survive doomsday.
The $60,000 corrugated pipe bunker that was created to survive doomsday.

The Svalbard Global Seed Vault was created to preserve seeds in case of a major catastrophe.
The Svalbard Global Seed Vault was created to preserve seeds in case of a major catastrophe.

The luxurious underground house in the Swiss Alps that doubles as a bunker.
The luxurious underground house in the Swiss Alps that doubles as a bunker.

The bunker constructed under the Greenbrier luxury resort in West Virginia.
The bunker constructed under the Greenbrier luxury resort in West Virginia.

The survival shelter in New York, that claims to be the most secure real estate in the world.
The survival shelter in New York, that claims to be the most secure real estate in the world.

The luxury Las Vegas home that boasts a bunker 26' underground with fake grass and simulated night and day.
The luxury Las Vegas home that boasts a bunker 26' underground with fake grass and simulated night and day.

The billionaire's bunker that is equipped with panic suite in the Hollywood Hills.
The billionaire's bunker that is equipped with panic suite in the Hollywood Hills.