"Fort Wee-ah-te-non"
* Fort: Pronounced as you would expect, with the emphasis on the first syllable.
* Ouiatenon: The emphasis is on the first syllable "Wee" with a short "e" sound. The "a" in the second syllable is pronounced like the "a" in "father". The "on" sounds like the "on" in "ton".
So, the full pronunciation should be: "Fort Wee-ah-te-non"