A single–rail roller coaster is a roller coaster that rides on only one rail, as opposed to the far more conventional two-rail setup of most roller coasters.

Luna Park Sydney is a heritage-listed amusement park located at 1 Olympic Drive in the harbourside suburb of Milsons Point, New South Wales, Australia, on the northern shore of Sydney Harbour. The amusement park is owned by the Luna Park Reserve Trust, an agency of the Government of New South Wales. It is one of Sydney's most famous landmarks and has had a significant impact on culture through the years, including being featured as a filming location for several movies and television shows.