Just to Whet Your Appetite
Welcome aboard the RoadTrip America Forums!
There are, of course, hundreds of intriguing sites along the way of most transcontinental routes, and that is particularly true of your intended route. For starters, consider the places that have been visited by RoadTrippers Peter, Bob, and Peter (again). Then you can't forget Devils Tower, Yellowstone and the Grand Tetons in Wyoming. I had the pleasure of poking around the Palouse a couple of years back, and Judy has written extensively on the Pacific Northwest.
You do have a month or so for this trip, Right?
AZBuck.