Nav System Re: City Only

The wife and I just returned for Cheyenne Wyoming (a 1200 mile trip) and sometimes we didn't want to go to a specific address along the way but a city. I found that I couldn't load a city as destination unless I added the address. Anyone have any idea before I return to the dealer for help? Usually a specific city can be loaded and one can go to the city and then determine where the trip shall end... We had no other problems with the Prime other than the Nav System as I've mentioned.

 

What did was look up an address int he city and simply put that in the Nav. I think one has to have an address no. as well as a street/city. There has to be method, I had an '07 Prius and could enter the city only as I can on my Garmin.