the Greycliffe Estate at the marriage of a Wentworth daughter, Fanny Katherine Wentworth. The original area and buildings of the Greycliffe estate dating from 1851, survive in a recognisable form. They are rare examples of a Marine Villa that has retained its setting in relation to the harbour. Greycliffe is one of a select group of houses owned and built by influential members of Sydney society on Sydney Harbour in the nineteenth century. The site is of considerable historic significance as it represents the picturesque aspirations of wealthy members of society during this period, and how a European landscape aesthetic was implemented in the Australian context. The intactness of Greycliffe, together with associated stables, coach house, gardener's cottage and the landscape setting contributes to an understanding of the cultural history of NSW. Nielsen Park Reserve represents an early 20th-century appreciation by both citizens and the State Government of the value of an important harbour side landscape. For a century, Nielsen Park has epitomised the recreational value of Sydney Harbour and is one of the first major recreational reserves created along the southern shore of Sydney Harbour. The establishment of the Nielsen Park Trust in 1912 represents an early demonstration of community concern for the conservation of the Sydney harbour foreshore led by the Harbour Foreshores Vigilance Committee. Shark beach is an historically iconic bathing location and has seen a series of bathing enclosures and associated structures develop over time. The bay, bordered by the existing swimming enclosure, together with structures including the kiosk, bathing pavilion and promenade demonstrate the surge in interest and evolving trends of public bathing and recreational activity throughout the 20th century. For more than fifty years, Greycliffe House played an important role in infant health care. In 1914, it became the Lady Edeline Hospital for Babies (only the second hospital established in Australia for infants under the age of two years) and then the Vaucluse Tresillian Mothercraft Home and Training School (the third such home established) until 1968. The establishment of an infant care facility at Greycliffe House illustrates contemporary understandings of the fresh air and harbour side location as a therapeutic landscape for infants. Various alterations and additions from this period demonstrate major changes in the philosophies and methodologies of infant care and are of great historical and social significance. Steel Point Battery, which was part of the 1870s harbour chain of defences, designed by