Back out on 89/191, Dubois is a scenic 70-some mile drive over a moderate mountain pass. Pulling into town, don't miss the National Bighorn Sheep Center. Yup, you heard right. It really is a don't miss. Not only are there hands-on exhibits that help you learn to differentiate the four different types of wild sheep in North America and explain how sheep can be so nimble on steep mountainsides, but the center also offers tours – complete with spotting scopes and binoculars – to the Whisky Mountain Habitat Area, home to about 750 bighorn sheep. The tours are $25 and offered from November through mid-March.

I don't want to sound too prejudiced, but November really is the best month to go: it's mating season and there's nothing quite like seeing two giant, curly-horned male sheep squaring off. Unless it's how unimpressed the female sheep act by all this activity carried out on their behalf: most often they're standing around in the background, idly chewing their cud. If you come through before the official tours start, the center has directions for a self-guided tour.