The main campus of ANU extends across the Canberra suburb of Acton, which consists of 358 acres (1.45 km) of mostly parkland with university buildings landscaped within. ANU is roughly bisected by Sullivans Creek, part of the Murray–Darling basin, and is bordered by the native bushland of Black Mountain, Lake Burley Griffin, the suburb of Turner and the Canberra central business district. Many university sites are of historical significance dating from the establishment of the national capital, with over 40 buildings recognised by the Commonwealth Heritage List and several others on local lists.
With over 10,000 trees on its campus, ANU won an International Sustainable Campus Network Award in 2009 and was ranked the 2nd greenest university campus in Australia in 2011.
Four of Australia's five learned societies are based at ANU—the Australian Academy of Science, the Australian Academy of the Humanities, the Academy of the Social Sciences in Australia and the Australian Academy of Law. The Australian National Centre for the Public Awareness of Science and the National Film and Sound Archive are also located at ANU, while theNational Museum of Australia and CSIRO are situated next to the campus.
ANU occupies additional locations including Mount Stromlo Observatory on the outskirts of Canberra, Siding Spring Observatory near Coonabarabran, a campus at Kioloa on the South Coast of New South Wales and a research unit in Darwin.