I mentioned in answering the "real world" counterpart to this question (see here
viewtopic.php?f=8&t=35132#p38327) that I was more interested in the fictional locales of anime, and so now that we are discussing it in this follow-on topic, I will reiterate/confirm what I said there. Mostly, if I had to pick one milieu's setting(s) to visit, it would be those of Cowboy Bebop -- The whole grand tour, in fact. I'd like to see Alba City on a terraformed Mars, and the orbital colonies of the beltline, such as Tijuana, or the moons of Jupiter and Saturn.
Back on Earth, I'd like to see what became of Singapore, the birthplace of Faye Valentine, and the desert airstrip of the old geezers' Space Shuttle.
But I will avoid going anywhere near where that old contaminated refrigerator might have ended up. *shiver*
I could certainly mention more, from Cowboy Bebop and other imaginative anime, but as long as I could get there in something like Spike's personal ship, The Swordfish II, that would be awesome.
That's basically it.