That was one of my see-before-i-die trips I made as a teenager. Based, entirely, on a profile in Nat Geo. Australia was another.

Iceland, Norwegian fjords, New Zealand mountains, and Haida Gwaii are nearest the top of my list for physical spaces. Rapa Nui would be a neat experience, but not wholly necessary. Hokkaido in Northern Japan would be a cultural experience I'd chase.

And, I'd really like to go on the ground from Djibouti to Cape Town on a circuitous voyage through as many places and nations as I can manage. Then, a flight to Libreville, Gabon and travel on the ground toward Ghana.