Wyoming terrain is as varied as you can find; badlands to sage to high meadows to alpine forest; you can get that transition in a matter of 10 miles in a few places. I like all the mixed high meadow and forest areas anywhere out in the northern Rockies; very pretty, and the grasses are a sign of deep snow in winter.
But it sure is nice that you can just drive out a ways, go riding, and then drive back home.
Wyoming is beautiful. I've been all over it. Yellowstone, Jackson Hole, Grand Tetons...… Cody is a beautiful town, Big Horn Mtns by Sheridan..... All of I-90 is beautiful.... I lived 30 miles from Cheyenne at one point.....