No offense to Storm, Clear and Big Lakes respectively, but we just don't rock in the lake department. The closest we come to a decent canyon is Ledges. That is a state park worthy of many visits in a lifetime, but it is a relatively small park. Forget about it. The nearest we come to that are the Loess Hills, and we tear them down for yuppie housing developments and dump waste in them routinely just because we don't accept hills as geographically marvelous enough to respect.
People marvel at mountains.
I cannot say how many times I have listened to some rock jockey from Colorado go on about how cool it is to live at the foot of the mountains and look upon them every morning over coffee and corn flakes. Mountains are nice. Not to take anything away from mountains, but they are dead common. You cannot swing a dead cat on planet Earth without hitting a mountain somewhere. Bragging about how cool your state is with its mountains doesn't impress me.