I'm wondering if I could kindly impose upon my forum friends here for some routing ideas for a touring type ride we're planning for this September? It's basically a big east coast loop that we're going to try to get done in about a week so there should be some time for finding good roads and some sights along the way.

The mountains between Maryland and north Georgia we all know pretty well and that route is pretty much defined. I'm looking for recommendations in NW PA, New York around Niagra, and the route through Canada over to Copper Harbor MI. We'll probably just stick to the Mississippi Valley on the way down to St. Louis - there are guys on the ride that have family stops to make along that way.

So any thoughts? Any "don't miss" roads, places to stay/eat, etc?