Powerhouse Parramatta will open in Sydney on November 7, 2026, bringing five major exhibitions to a 30,000-square-metre cultural complex on the Parramatta River. $915 million museum will feature more than 3,000 objects, international loans and a rooftop observatory. Its opening could create a major new attraction for Sydney, adding science, technology, art and design experiences beyond the city’s traditional sightseeing circuit.