Princess Diana's final resting place is said to be in the grounds of Althorp Park, her family home. The original plan was for her to be buried in the family vault at the local church in nearby Great Brington, but her brother, Earl Spencer, said he was concerned about public safety and security and wanted his sister to be buried where her grave could be looked after properly and visited in privacy by her sons.

Lord Spencer said he had decided she would be buried on an island in an ornamental lake known as The Oval within Althorp Park's Pleasure Garden. A path with 36 oak trees, marking each year of her life, leads to the Oval. Four black swans swim in the lake, symbolizing sentinels guarding the island. Charles Spencer saw this vision in a dream. In the water there are several water lilies. White roses and lilies were Diana's favorite flowers. On the southern verge of the Round Oval sits the Summerhouse, previously in the gardens of Admiralty House, London, and now serving as a memorial to Princess Diana. An ancient arboretum stands nearby, which contains trees planted by Prince William and Prince Harry, other members of her family and the princess herself.