Free Republic

Mark Zuckerberg is said to have started work on Koolau Ranch, his sprawling 1,400-acre compound on the Hawaiian island of Kauai, as far back as 2014. It is set to include a shelter, complete with its own energy and food supplies, though the carpenters and electricians working on the site were banned from talking about it by non-disclosure agreements, according to a report by Wired magazine. A six-foot wall blocked the project from view of a nearby road. Asked last year if he was creating a doomsday bunker, the Facebook founder gave a flat "no". The underground space spanning some...

A complex of doomsday bunkers in South Dakota that can house 10,000 people is being hailed as the 'back up plan for mankind'. Equipped with survival gear and custom-made interiors, the city-sized complex could save thousands in case of an asteroid strike or nuclear war, the creator claims. Although the structures look imposing from the outside they have all the home comforts, including sofas, a coffee table and paintings hanging on the walls. They even include 'virtual windows' with LEDs to simulate the different views of the outside world.