If you had 3 weeks to spend in Australia where would you go?Litchfield National Park, just south of Darwin, Uluru, Kings' Canyon, the Blue Mountains (in particular the 3 sisters etc.), the Great Barrier Reef (haven't been there yet myself), Sydney - especially go on a ferry around the harbour, Great Ocean Road, probably Monkey Mia if going to West Coast. Oh, so much to see!!!! It's hard to choose.