Oh, so many places.
Not in any particular order:
Antarctica (so I will have set foot on all the continents. And it is just a wonderful place.)
Bhutan, one of the happiest places on earth.
Tibet, the forbidden kingdom.
Tanzania, Mt Kilimanjaro. Also the gems.
Botswana, No. 1 Ladies Detective Agency.
Madagascar & Sri Lanka, have wonderful gems.
Laos (and the upper reaches of Thailand.)
Indonesia. One of our nearest neighbours and I’ve never been there! (Not every Aussie has been to Bali.)
Some of the Pacific island nations. (Again, ”in our back yard” and I’ve not been. Partly because sun, surf and sand is not our first holiday choice, but I like snorkelling, and there must be more.)
Machu Picchu (Yes, it’s getting very crowded, but there’s a reason for that.)
Siberia (hopefully with a friend of mine from Vladivostok. Not much hope of that soon. My Russian friends can’t even get postal service to their families.)
Andorra, Luxembourg, Lichtenstein, and San Marino, to ”finish” Western Europe.
Puglia, Sicily & Sardinia.
More of Eastern Europe.
Myanmar, again. I miss my friends there and worry about them.
Uluru, The Kimberly, Arnhem Land, Coober Pedy & Lightning Ridge.
Sorry, I could go on…
My cousin and her boyfriend once drove a car from Johannesburg to London. (She was returning from a residency in a hospital there. Do not ask about the incident of the needle-stick injury from the HIV-positive patient.) She is somewhat more adventuresome than me.