Sydney Observatory

Sydney Observatory is a heritage-listed former astronomical observatory and now museum on Observatory Hill at Millers Point in central Sydney, New South Wales. Built between 1857 and 1859 to designs by Colonial Architect Alexander Dawson, it served for timekeeping, meteorology and astronomy. Operated by Powerhouse Museum, it houses historic telescopes, exhibitions on astronomy and timekeeping, and offers harbour views over Sydney Harbour and the city.

Visitors can expect a historic sandstone observatory complex set in Observatory Hill Park with panoramic views of Sydney Harbour and the Harbour Bridge. Inside, heritage buildings house astronomical instruments, historic telescopes including the 1874 lens and 1870s transit telescope, and exhibitions on astronomy, timekeeping and meteorology. The site includes telescope domes, gardens and open grounds to explore, with guided tours and ticketed night-time telescope viewing when programs are operating.

Built 1857-1859 to the design of Colonial Architect Alexander Dawson on Windmill Hill, now Observatory Hill. Established to provide accurate timekeeping for the colony, meteorological observations and astronomical research. Played a key role in time ball and time gun signals for Sydney Harbour, weather recording, and later astronomical work. Listed on the New South Wales State Heritage Register as a significant 19th-century scientific institution.

Located on Observatory Hill, known as Windmill Hill, a place of significance to the Gadigal people of the Eora Nation. Represents the development of science in colonial New South Wales and public education in astronomy. Now operated as a museum by Powerhouse, it continues its role in science communication and preserves Australia's astronomical heritage for visitors.