A house is never just a house. For these people, it’s where ideas were born at 2 a.m. or where big decisions were made over coffee. Walk through the rooms where someone famous once lived, and you’ll get a glimpse of the real person behind the fame. These American cities were home to presidents, inventors, musicians, writers, and more. You'll meet Elvis Presley, whose home in Memphis, Tennessee, is closely tied to his music and legacy, and Muhammad Ali, who grew up in Louisville, Kentucky, before rising to become The Greatest. Let’s hit the road.