This fountain commemorates Diana, Princess of Wales. The designer Kathryn Gustafson, an American landscaper, wanted to reflect Diana's "inclusive" personality by making it easily accessible to all. The two sides of the fountain reflect the split between happy times and turmoil in Diana's life - the water flows smoothly on one side and more turbulently on the other.

The fountain was opened by Queen Elizabeth II, Charles Spencer, Diana's younger brother and Diana's two sons in 2004. It was hoped the fountain would be used for quiet wading and contemplation but people were injured slipping in the water. There were three hospitalisations and it had to be closed. It soon re-opened with fences and wardens keeping the public at bay.