Picton. Condition As of 27 March 2012, a large brick tank about in diameter, internally rendered and capped with a brick dome, still holds water. As well as the underground water storage tank there are other sites considered to be of archaeological interest. They are the site of the "Old Gaol" or Convict Barracks, a line of stones adjacent to the existing timber barns and the remains of a floor surface. Modifications and dates 1985the original access road to Abbotsford House extended in a straight line from the Abbotsford crossing of Race Course Creek. New works commenced in 1985. 1986the 1908 L timber trestle bridge was demolished. It was the site of original bridge over Racecourse Creek, at the site of Abbotsford crossing. Heritage listing As at 27 March 2012, the Abbotsford'' property is significant because of its associations with the early settlement of the Picton area and its links with prominent colonial figure, George Harper and later, the Antill family. In addition to its historical significance the site has the potential to yield further evidence of the working of this important pastoral estate through archaeological investigation. The Abbotsford cottage and brick outbuilding are significant for their contribution to the understanding of the function and layout of the group as a whole. The architectural value and intactness of the house as an early homestead has been lost. The ruins, together with the other components of the property, provide an opportunity to interpret an early pastoral property through archaeological investigation. The ruins are also an evocative part of the Abbotsford group which is a landmark in the rural surrounds of Picton. The mature trees and remnants of the gardens and grounds of the Abbotsford property have scientific significance as a collection of rare species of horticultural interest and their association with George Harper who was a noted natural history collector. Together with the other components of the Abbotsford group, the plantings provide evidence of the structure and layout of the farm estate. In a wider context, the surviving plantings also illustrate the horticultural practice of plant collecting which was to remain an important influence in the development of gardens of the colony for a substantial period of time. Today, the trees are a landmark and contribute to the character of the rural landscape north-west of Picton. The mid-19th century cottage and brick outbuilding are significant from their contribution to the understanding