In the "you learn something new every day" category -
I've been here in the UP since 1971 and have never known how to pronounce "Seul Choix," a point on Lake Michigan where there is a historic lighthouse. Just found out that the "locals" pronounce it "sis-shwa," while the French pronunciation is "sel-shwa." Maybe some of the Canadians here (or anyone else) would care to chime in on this?
I obviously do not qualify as a local (and neither does my husband, who was born and raised in the UP), as in my mind it's always been more like "seal-choy"