NEW DELHI: When the Duke and Duchess of Cambridge arrive in India on Sunday, on what's being called their most ambitious tour to date, they'll encounter much of the starry-eyed giddiness they're used to along with a hint of nostalgia harkening back to a 1992 visit by the late Princess Diana.

Prince William's mother created a media firestorm during that visit when she posed alone for a photograph in front of the Taj Mahal, the ivory-white marble mausoleum known as a monument to love because it was built by a Mughal emperor to entomb his beloved wife.

Newspaper headlines crowed suggestions about Diana delivering a hidden message about the end of her marriage to Prince Charles. And the photo, as well as her close relationship with Mother Teresa, helped make Diana hugely popular in the country.

But India, despite its fractious past as a part of the former British Empire, has always loved reading about the British royals, especially the Duke and Duchess and their young children. They will not be taking their children, Prince George and Princess Charlotte.

They are also scheduled to watch a cricket match in the city, and to meet with children from a local slum and members of several children's charities.

The couple's schedule has them set to travel next to New Delhi, where they are expected to pay their respects to freedom fighter Mohandas K. Gandhi, who led a peaceful campaign for independence from Britain and was assassinated in 1948. They will also visit the India Gate war memorial in the heart of the crowded capital, and have lunch with Prime Minister Narendra Modi.

In a nod to William's conservation efforts, the couple will next travel to Kaziranga National Park in the eastern state of Assam. The park is home to two-thirds of the world's population of Indian one-horned rhinos as well as endangered swamp deer.

From Assam the royal couple will head to the Himalayan kingdom of Bhutan at the invitation of its own royal couple, King Jigme Khesar Namgyal Wangchuck and Queen Jetsun Pema.

The duke and duchess, who routinely showcase their athletic skills, will also hike several hours to visit a 1692 monastery called Paro Taktsang, or Tiger's Nest.

The couple plans to wind up the tour with a closely-watched tour of the Taj Mahal, in the north Indian city of Agra.

"He feels incredibly lucky to visit a place where his mother's memory is kept alive by so many who travel there," the Cambridges' communications secretary Jason Knauf told reporters ahead of the trip. It is unclear if the couple will pose for photos at the same bench in front of the medieval monument where his mother was photographed smiling shyly for the camera.

Indian journalists were already preparing for the media frenzy. "What did Diana wear, what Kate wears, there'll be that sort of thing," The Indian Express' Bajpai said. "Unless they make a mistake of some sort, that's really all anyone will discuss."