Last month I drove almost across the country, to Montana. I drove from here out to St Louis, where Jon's company is located, and then we drove to Judith Gap, MT together. All together it was four days of driving each way, but worth it. One of the places we stopped was Bighorn Canyon, on the Little Bighorn River. Its beautiful. The Orange rock contrasts beautifully with the blue water, and its massive.
The battle of Little Bighorn National Monument is only about an hour north of the canyon, here are some photos I took of it several years ago. Its very interesting if you enjoy history, and a pretty grassland to look at if you don't.