Microsoft fonder Bill Gates owns over 300 houses all across the United States. He has bought them quietly over the years so that he will have a place of his own to stay no matter where he goes. The houses were carefully selected so that no house is more than a three hour drive from the next house. All the houses are relatively small and unobtrusive. The only things that make the houses unusual is that each one has a top-of-the-line security system, a T-1 Internet connection, and an underground shelter with room for 25 people and food for a three year stay.