The influx of transported convicts, penal administrators, civil and military officers and their families, had a significant and last impact on the island. Their labour has filled the Tasmanian landscape with sandstone streetscapes and grand homes. Much of their work is still used today, from Australia's oldest bridge, to small cottages, public buildings and wonderful streetscapes. Most of these convict built sites have been given heritage listing, protecting them for the enjoyment and education of future generations.
Eleven of Australia's most important and highly significant convict sites were inscribed on the World Heritage List, all of which were included in the Australian Convict Sites World Heritage serial nomination lodged with UNESCO by the Australian Government in January 2008. Of the eleven sites, five are in Tasmania.