Cerulean City, so I could see if Misty's sisters are REALLY still there or not.
Another idea is in Indego Plateau. I could be an announcer for the League.
"Yeah, Squirtle isn't really a name you want to throw around, is it? I mean, you don't want to go to an airport and ask, 'Can I take a Squirtle on the plane or do I have to leave it in carry-on?'" ( A GI-Best in Show in-joke there...)