Diana, Princess of Wales Memorial Fountain - Hyde Park London. Photo: Jason Hawkes Kathryn Gustafson PLA, FASLA, CLARB, FRIBA Photo: Kyle Johnson At the recent Australian Landscape conference distinguished American landscape architect Kathryn Gustafson dazzled Australians and New Zealanders with the beauty and breadth of her distinct sculptural designs that are located in sites of cultural and historic significance around the world.City Center Washington