Shortly before his death in 1957, Sultan Mohamed Shah Agha Khan, spiritual leader of the Ismaili sect of Islam, chose as his resting place a solitary sand dune on the West Bank of the Nile at Aswan. Princess Yvonne Agha Khan, known as the Begum, a French national and the Sultan`s third wife, has cared for this tomb ever since, staying at their house nearby for six months of the year and spending the summer at their villa in Cannes.