Been a while, but in 1993 we took a cross-country vacation with our children while they were still living with us, and stayed in some wonderful spots. I think the most beautiful of all - in my mind - was the campground in the Grand Tetons. We found a spot on a lower loop right by the lake... no sites on either side, and no sites between us and the lake, and only a few yards from the water... it was like we owned the place all by ourselves. The lake was calm, and the Tetons reflected on the water like a mirror, with the peaks still covered in snow. We had actually planned on just an overnight in the Tetons on the way to Yellowstone, but ended up staying 4 days there, and only two in Yellowstone, because we couldn't bring ourselves to leave that view. Highly recommended if you're headed that way (but if you are in our campsite when we go back, I'll flatten your tires (LOL)).