The main campus of ANU extends across the Canberra suburb of Acton, which consists of 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.