World's elite choosing to custom-design private (and super secret) shelters to ride out a pandemic, World War III or any other threat of global annihilation.
원문출처 : http://www.cnn.com/2017/03/20/luxury/doomsday-luxury-bunkers/index.html
원문출처 : http://www.cnn.com/2017/03/20/luxury/doomsday-luxury-bunkers/index.html