Let’s start with the US states, as it’s probably more impressive. I counted driving through places but not (obviously) flying over them. I’ve lived in Texas, Washington, Utah, Virginia, and Georgia, but I’ve driven through or visited a lot more. My father was military-connected.

(Map created here.)
Now, for the world map of places I’ve been:

(Map created here.)
Yeah, this is pretty Western-Europe-centric because my father was stationed in Germany. Ich liebe Deutschland! but it would be nice to branch out and see some more places. I wanted to go to Greece really badly because my mother, having been given nightmares by a parent giving her Grimm’s Fairytales as a child, handed me a copy of D’Aulaire’s Greek Myths instead… but my mother said no. This was the late 70s, so shortly after there had been turmoil there.
So there’s a stunning lack of Latin America, a stunning lack of Eastern Europe, a stunning lack of Asia, and a stunning lack of Africa and Oceania. I would like to remedy that, and will post an update after I have one. I mean, Montreal WorldCon is coming up in 2027, and some of the upcoming bids are Ireland, Prague, Australia, and Rwanda. So we’ll see!