to 1984, and all buildings and development on the site reflect the changing social and scientific demands of Quarantine during that period. The formation and development of the Quarantine Station relates directly to the growth of Australia as a remote island nation. It symbolises the distance travelled and perils faced by many immigrants who first stood on Australian soil at the Quarantine Station. The site has symbolic significance for these reasons. The history of the site reflects the changing social and racial values of the Australian community and the development of medical practices in controlling infectious diseases. The site has historic significance in demonstrating and elucidating major themes in Australian history, immigration, the development of society and government, social welfare and health care, treatment of disease, transport and conservation. Evidence of the hardships experienced by European and Asian internees during their detention in Quarantine and the tragic deaths of some of them, is powerfully conveyed by the inscriptions on the gravestones, monuments and amongst the random inscriptions scattered throughout the site. The rugged topography of the southern rock cliffs in the area of the Old Mans Hat, where the power of the sea is manifest, and where the healthy and sick internees sought relief from the confinement of the Quarantine Station, contrasts strongly with the sanctuary of Quarantine and Store Beaches, where European vessels were first quarantine and from where the food gathering and cultural activities of Aboriginal people were abruptly halted. The views to the Station and to North Head from the city of Sydney; and from the Station down the length of Port Jackson are significant for their iconic value. The class system which permeated Colonial society in this country is illustrated clearly in the extant building fabric and in cultural landscape which contains the subtle evidence of the fences and paths which were contrived to maintain absolute separation between the classes and races, and between the healthy and the sick, the dying and the dead, at the Quarantine Station. The whole place displays evidence of natural systems, historic built forms and historical associations with the experience of quarantine have been retained largely intact due to its relative isolation on North Head. North Head Quarantine Station was listed on the New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or