I'm from Earth... I've never heard of Panem. I'm not saying I don't believe you; I'm terrible at geography.

They're in the United States. I'd say they sound more exotic than they are, especially the latter these days. There's no travel anymore. The world is falling apart. No airlines, no trains, no ships; no fuel for any of them and most of the people who would've controlled them are probably either dead or undead by now. Highways were so congested with abandoned cars all the way down the coast, I had to walk. Took days. So I guess if that counts then I've traveled a little?