I am also planning a trip from St. Louis to the Grand Canyon. I am taking my 17 year old son on a road trip. He enjoys stopping at many of the " see historic...." sights along the way to anywhere USA. We will definitely stop in OK City to see the memorial and in Amarillo to see the Cadillac Ranch and Paladuro Canyon. What are the "don't miss" sights on the way to the Grand Canyon? We will be returning to St. Louis via Denver and would like to know what should see between the Grand Canyon and Denver and between Denver and St. Louis. Our total travel time beginning to end is 10 days
Moderator Note: I moved your post to its own thread so we can focus on the details of your trip!