Ever wonder what the Department of Interior does? Well, one thing they do is designate national landmarks that have "meaning to all Americans." The latest spot to get that designation: Graceland, Elvis' house in Memphis. According to the head of Elvis Presley Enterprises, Graceland is the second most famous residence is the U.S. (We're guessing the White House could be number one). If Graceland can get the designation, shouldn't the Brady Bunch house get a similar designation? And for those wondering what the criteria is for becoming a national landmark, the FAQ is here.