Chicago to Toronto

Hi,

We are planning a Chicago to Toronto road trip (via Niagara). Was wondering if there are any places we could visit on the way (in Michigan). Plan to take I90 all the way to Canada. Any recommendations? Am interested in any scenic places on the way or state parks or so.
Thanks!

I'm confused, I-90 doesn't go through Michigan.

Do you mean I-94 to Detroit and into Canada, or are you planning to take I-90 all the way to Buffalo and cross into Ontario at Niagra Falls?