We stopped at the Cahokia Mounds on the way to IOLI in Indianapolis. It was definitely worth a stop and had we had more time, we would have walked the mounds. As it was we really only had time to see the museum and a small portion of the grounds. I was impressed with the quality of the finds and the overall layout of the museum. It was informative without being too overwhelming and provided just enough interest to keep my attention from wandering. If you have the chance, stop, and check it out.