When Graceland opened to the public 30 years ago this month, nobody knew if it would be a success. Nearly 18 million visitors later, the house where Elvis Presley once lived is a money-making business that's helped transform the city of Memphis into a top destination for music lovers.
But Presley's ex-wife says it's the spirit of Elvis, and not just music history, that keeps the crowds coming to Graceland.
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