Port Arthur is a small town located on the Tasman Peninsula in Tasmania, Australia. It is best known for the Port Arthur Historic Site, which was once a 19th-century penal settlement and is now a UNESCO World Heritage Site. The site features well-preserved ruins of the prison, guard towers, and a chapel. Visitors can take a guided tour to learn about the harsh conditions that the convicts endured. In addition to the historic site, Port Arthur also offers scenic views of the coast and opportunities for outdoor activities such as hiking and kayaking.