 The park contains the Great North Road, one of the eleven UNESCO World Heritagelisted Australian Convict Sites.These eleven sites present the story of the forced migration of convicts and the ideas and practices of punishment and reform of criminals during this time.The relatively intact Devine's Hill and Finch's Line sections of the Old Great North Road, approximately long and contained within the national park, were inscribed on the World Heritage register in July 2010.