Since opening to the public in 1982, Graceland has hosted millions of visitors from every state in the union and nearly every country of the world. Prior to Graceland's opening, there was minimal tourism trade in Memphis. Graceland quickly became the cornerstone of the industry for the city and the region. Graceland welcomes over 600,000 visitors each year, is one of the five most visited home tours in the United States, and is the most famous home in America after The White House. In 1991, Graceland was placed on the National Register of Historic Places.