When a reporter asked her how she had enjoyed her visit, she said it had been "very healing". Asked what she meant, she said: "Work it out for yourself." Later that year the couple announced their separation.
"Lady Di's Chair", as it is now known, is a magnet for tourists who have their picture taken there, and the Duke and Duchess are likely to see it when they visit the mausoleum on the last day of what will be their first tour of India and Bhutan.
The couple will begin the tour on April 10 by laying a wreath at a memorial inside the Taj Mahal Palace hotel in Mumbai to those who died there during the terrorist attack in 2008.
"The Taj Mahal is one of the symbols of India and Their Royal Highnesses cannot wait to see it with their own eyes," said William's spokesman.
"The Duke of Cambridge is of course aware of the huge esteem his mother ... is held in in India, and he appreciates the iconic status of the images that exist of the Princess at the Taj.
"He feels incredibly lucky to visit a place where his mother's memory is kept alive by so many who travel there."