==Category:Visitor attractions in Nevada= 
 I know that Visitor attractions are found under Tourism and then under Economy, but the casual Wikipedia visitor would not be likely to find it under such a tree.  I believe that visitor attractions in a state are one of the more popular items of information that someone might look for about a state.  The category also combines many different types of attractions that are otherwise found in very different categories, like museums, parks, sports venues, entertainment venues, etc.  I believe that adding it to the top level of each state will help users find it more easily.