The disembodied laughter of children and a mysterious woman in blue.
Thousands of people tour the Port Arthur Historic Site every year and many of them report creepily similar experiences.
Port Arthur has a long history. It began in 1830 as a timber station, and for the next twenty years it housed some of the most hardened criminals from England, along with petty convicts and repeat offenders from other prisons around Australia.
It also housed the families of convicts - many of them young children.
The harsh living conditions and the manual labour these convicts undertook, meant they often died young and under horrible circumstances, and many believe they haunt the historic site to this day.