You don't even want to know how my English teacher pronounced Arkansas
Was it ar-KAN-zis? Like...our Kansas? Because being from Kansas, it's hard to explain to people why the Arkansas River and the state of Arkansas are prounounced differently.
In KC, there's a street called Knickerbocker Place. I always giggled when we passed that.
Also, Marais des Cygnes, pronounced mur-ay duh zeen. Except much faster, so it usually comes out m'ray d'zeen.
In my neck of the woods, there's also towns called Peculiar and Humansville.