big plans

So, we bought a van.  We've got big plans to take 6 weeks and drive across the country next summer and we were looking at renting a van or the smallest of RVs.  We were pretty shocked at how much it would cost to do so, and so weighed it all out and decided if the right thing came along, we'd buy it.  Papa's car will need to be replaced soon and surprisingly, the van gets about the same gas mileage as his little hatchback, so......... here we are.  The proud owners of a vehicle that looks kind of like a minivan, a cargo van and a wagon all got together and made a shiny silver baby.

We've got plans to remove 3 of the 4 rear seats and build a platform that will hold an air mattress some evenings, with room for storage below.  We are having all sorts of fun planning everything from our route to what gadgets to buy to how best to make an awning/mosquito netting, and everything in between.  Mike and I did a 6 week cross country tour the summer of 1999 (we were practically babies!) and I know we'll hit up several of the same places, but we also want to see plenty of other things, too.  We know we want to spend a fair amount of time in the four corners states, California, the pacific northwest (including BC), and in the general proximity of Yellowstone.  Also Badlands.  Maybe Great Lakes area (we've done Isle Royale and it was incredible)....... ah! we are going to run through those 6 weeks fast!  I'd love (LOVE) any and all recommendations that you might have for places not to be missed.  We are primarily looking to see National and State Parks (the little one will be a rising 4th grader next summer so we are looking to take advantage of the "Every Kid in a Park" program, which gives 4th graders and their families free access to federal lands), but we would love to know about great little towns and such along the way as well.  So- what are your favorite places in this beautiful country of ours?