A new perceived threat followed World War II and the Cold War. A fear of getting hit by the nuclear "big one" became a way of life for Americans and other countries all over the world. School drills telling kids to hide under desks didn't quell the nerves of some families. With paranoia lurking everywhere, underground shelters began to pop up across the globe. Author and photographer Richard Ross sought these shelters out during his travels and documented them for his project, "Waiting for the End of the World." These impressive structures transformed over the years into tourist attractions, comfortable...