My favorite Ohio place name peculiarities are:

A-thens, downstate home of Ohio University sounding nothing like Greek

and

Lima, pronounced like lima beans, not Lima, Peru.

I'm fascinated by the vernacular pronounciations of English place-names as most of the streets in my suburb are distinctly English (Scarborough, Essex, Oxford, Dartmoor, Canterbury, etc) and I wonder how much that was part responsible for my own Anglophile tendencies.

Joanne in Cleveland Heights