fun activities for kidsI'm traveling from Wisconsin to Florida in winter. Are there fun kids activities to do along the way?

We are thinking of driving from Wisconsin to Florida during the winter months. We can travel through Illinois or Indiana, Kentucky, Alabama or Georgia alongfun activities for kids the way. Are there any especially interesting/fun (for 5-10 year old kids!) attractions, museums, zoos, etc that we can visit along the way?
In Huntsville, Alabamfun activities for kidsa is NASA's Marshall Space Flight Center and the U.S. space and Rocket Center

Just northeast of Bowling Green, KY is Mammoth Cave National Park