Port Arthur’s historic ruins get all of the attention. Often overlooked and underappreciated are the groves of enormous trees, especially near the pathway to The Dockyard. These are mountain ash, indigenous to Tasmania and parts of Victoria. Also called Tasmanian oak, these giants typically grow over 275 feet. This qualifies the eucalyptus regnans as the world’s second tallest species. If not logged, these straight, gray-barked beauties can live for hundreds of years.