Hey, @authorfriendly! I think those two places are great destinations and would love to visit there someday. I wouldn't look forward to the flight(s) though. Way too long a trip.
So, you say you've seen every other continent with your own eyes, which includes Antarctica? That's amazing in and of itself. I've currently never made if off of North America (still plenty here I haven't seen, too), but my wife and youngest son have both gone to Japan, and she also wants to end up in Europe at some point. Something about castles.
I wish you luck getting down under.