Sydney Observatory evolved from a fort built on 'Windmill Hill' in the early 19th century to an astronomical observatory during the nineteenth century.

The Powerhouse Museum is Sydney's museum of science, technology, design, decorative arts and social history. It is part of the Museum of Applied Arts and Sciences, a New South Wales Government funded cultural institution.

The Sydney Jewish Museum is a museum in Sydney, Australia, which documents the Holocaust and the history of the Jewish people in Australia. The Sydney Jewish Museum gives history a voice through collecting and preserving historic objects, commemorating and educating, with a mission to challenge visitors’ perceptions of morality, social justice, democracy and human rights.

Sydney is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. The 2021 census recorded the population of Greater Sydney as 5,231,150, meaning the city is home to approximately 66% of the state's population. Nicknames of the city include the 'Emerald City' and the 'Harbour City'.

The Australian Museum is one of the oldest and most prestigious museums in Australia, with an international reputation in the fields of natural history and anthropology. It is located in the heart of Sydney, near Hyde Park and a short distance from the Sydney Central Business District.

The Museum of Sydney is a historical collection and exhibit. It was built on the ruins of the house of New South Wales' first Governor, Arthur Phillip, on the present-day corner of Phillip and Bridge Street, Sydney.

The Hyde Park Barracks Museum is a brick building and compound designed by convict architect Francis Greenway between 1818–19. Originally built at the head of Macquarie Street to house convict men and boys.