The North Head Quarantine Station at Manly, Sydney, operated from 1832 until 1984 as the primary maritime-quarantine facility for New South Wales, processing more than 13,000 passengers and crew from suspected-disease vessels across its 152-year history. More than 570 deaths were recorded on the 110-acre site, concentrated in the 1881 smallpox outbreak and the 1918–1919 Spanish influenza epidemic, during which the station processed thousands of returning AIF soldiers. The site is now Q Station, a heritage hotel and conference centre, and is widely recognized as among the most documented haunted locations in Australia.
Resident paranormal activity is concentrated in three buildings. The Hospital Precinct — particularly the former smallpox ward and the children's isolation unit — produces persistent reports of a young girl in early-twentieth-century dress who speaks to guests, and of unexplained tapping and drawer-opening at night. The Shower Block, where arriving passengers were forced to strip and undergo disinfection, registers severe emotional atmosphere and repeated reports of female voices sobbing; audio recording during organized tours in 2013 captured a clear female voice saying 'Help me' during an empty-room session. The cemetery, at the southern end of the property, contains more than 280 marked and several hundred unmarked graves; tour groups have photographed what appear to be figures in period dress among the headstones.
Q Station operates formal paranormal tours nightly and has hosted investigations by Ghost Adventures, Australia's Most Haunted, and dozens of independent research teams. The Sydney Heritage Ghost Research Group maintains a detailed activity log spanning more than 500 documented investigations since 1998. The National Trust of Australia (NSW), which oversees the property, has issued formal acknowledgements of the reported activity in its interpretive materials. The combination of the site's staggering death toll, its isolation on the North Head peninsula, and the relatively-intact Victorian and Edwardian infrastructure has given North Head Quarantine Station a paranormal reputation rivaling any location in the country.