I was in Yellowstone Park last year with my family. One of the joys of taking long car trips is "collecting" states.
starting from Michigan we collected Indiana, Illinois, Iowa, Wyoming, Montana, South Dakota, Minnesota, And Wisconsin. While we were in Yellowstone we saw a sign to Idaho. We had heard of Idaho so we decided to "collect" it. As you can probably guess, the road to "Idaho" was closed. Something about a huge forest fire. The whole experience ruined our trip and until I read your post, I didn't really know why.

Update: Come to find out the huge forest fire was on the east side of Yellowstone and we were prevented from going to Cody, Wyoming. However, I don't think that being wrong on one fact should negate the entire thrust of my point.