The Great Southern Railway, owned by Serco Asia Pacific, operates three trains: the Indian Pacific (Sydney-Adelaide-Perth), The Ghan (Adelaide-Alice Springs-Darwin), and The Overland (Melbourne-Adelaide).[9] NSW owned NSW TrainLink services link Brisbane, Canberra and Melbourne to Sydney. Since the extension of the Ghan from Alice Springs to Darwin was completed in 2004, all mainland Australian capital cities are linked by standard gauge rail, for the first time.