I'm leaving for Utah in the morning

So far the trip includes Rocky Mountain Nat'l Park (CO), Canyonlands Nat'l Parl (UT), and Monument Valley (Navajo but in UT). Trying to do some urban exploration on the way. Cool stuff by Toledo (abandoned Nike missile site what what). Let me know if you have any suggestions of places to visit. The giant space in between Ohio and Colorado is going to take forever if I'm bored.