 The national park also contains a number of Aboriginal sites which are of importance to our understanding of the Cattai area prior to European settlement.The Cattai Homestead, which was constructed around 1820, and its curtilage is listed by the National Trust and the Australian Heritage Commission.The Hope Farm Mill on Hope Farm, which is also listed on the Register of the National Estate, was probably constructed around 1806 and is believed to be the oldest industrial site in Australia.