PHOTO: The 36,000-square-foot safe house outside Atlanta took about six years to build with a full-time crew. The owner, who is now in his 80s, had been planning to build a home with this high a level of security ever since he was 10. Photo: Courtesy of Paul Wegener, Atlanta Fine Homes Sotheby’s International Realty.

The safest house in America might be a sprawling 3345-square-metre compound outside Atlanta. And it’s a bargain at $US14.7 million ($18.2 million).

Built to last 1,000 years and to withstand every type of attack, the eight-bedroom, 15-bathroom house cost $30 million to construct and was reduced from its original list price of $17.5 million.