We are planning to visit family and friends in St. Louis, Tulsa and Nebraska and and will travel mostly on Highways 70 and 40. My husband has a torn tendon and has been told to stay off his feet except for short strolls, so I am looking for things to see along the way that don't involve much walking. Interesting scenery, architecture and history are more important to us than shopping or eating for this trip. Would appreciate any suggestions.