Favorite cities and states for RVing?

Its neat to see all the state and province maps both on here and on RV's. But I wonder how many forum members have managed to achieve all 3 territories, 10 provinces 81 states and 2 federal districts of North America. And not just drive through them but more in depth historical touring. Don't know if we'll ever achieve that but won't lack for trying. So far we have about 55 states if we only count the ones we have actually explored, all the provinces, one federal district and no territories (at least with the RV). Our brief visit to the Mexican federal district shouldn't really count as it was a drive through on the Arco Norte. We had intended to visit the US federal district last year and got chased away by a hurricane. OH well. Lotsa time....we hope. :)