I use to live in Idaho. My favorite is the potatoes there, but go to the wilderness area in north central Idaho. It is worth seeing. Visit historic Idaho City. See McCall, Sun Valley, and of course Boise the capital. I still miss Idaho!
For what? Can't recommend anything unless you tell us why you must make this particular choice. For the record, Iowa has the nation's highest literacy rate, a higher per cap. income than Idaho; lower sales tax than Idaho; and a population density 3x ...
Idaho was once part of the great Inland Sea that stretched from Canada down to the Gulf of Mexico. This was mostly during the Mesozoic Era, but Idaho has been under oceans various times throughout geologic history. Finding seashells there is no surpr...