Elvis Presley's Graceland unseen: Inside the huge attic and what the King kept in his roof

's opened to the public in 1982, five years after the star's death.

Today the Memphis mansion is the second most visited home in the US after the White House, but the King's mysterious upstairs remains off-limits to the public.

Graceland's upstairs was Elvis' private space in life and remains so after his death, according to the wishes of his late daughter Lisa Marie Presley and now granddaughter Riley Keough.

Nevertheless, just like the downstairs rooms of Graceland that fans can see today, Elvis Presley's bedroom and office upstairs are preserved and maintained.

But besides the upstairs, just what mysterious items are found inside Graceland's attic?

The Daily Express previously took part in a virtual live tour of the Graceland mansion, and we asked on-site archivist Angie Marchese what was in the roof. The Elvis expert replied, "All of the attic items have been moved to the archives." And as for what The King had chosen to keep there, Angie said: "All of Gladys' belongings, his army stuff was up there. Some of Lisa's baby clothes, old furnishings and drapes." By the sounds of it, Graceland's attic was used to store items that Elvis and his family were no longer using. Sadly, his mother died in 1958, aged only 46, just as the King was setting off for his brief stint in the army.

After two years serving overseas in Germany, Elvis returned home to Graceland as Sergeant Presley. His army gear is now on permanent display across the road from the mansion at the entertainment and exhibit complex, Elvis Presley's Memphis. Meanwhile, some of Gladys' clothes are hung up in the closet inside her bedroom, which fans can see early on during the walk-through tour. Despite her son's newfound wealth, Elvis' mother preferred to repair her simple clothing all the time.