Precious,
First, you need to tell us two things:
Do you want Scenery, Museums or Both. (Michigan is good for both)
How long do you have or how many miles? (Michigan is big and has two parts)
There are only two large National Parks, Sleeping Bear Dunes on the west coast of the lower peninsula and Pictured Rocks on the north coast of the upper peninsula. But there is Huron National Forest and a plethora of open state parks and campgrounds but any with facilities will probably require a reservation.
Good Luck
Matt
