We spent a month in San Diego parked at the Mission Bay RV Resort on, surprisingly, Mission Bay. It is a beautiful location surrounded by the Mission Bay Park and the bay itself. There is a nice hiking/biking path that runs for miles in both directions. It is also located 5 minutes from downtown San Diego, Old Town San Diego, Little Italy, the Embarcadero, etc.
From Acadia National Park, we moved further south along the Maine coast to park at the Blueberry Pond Campground near Freeport, ME. Established in 1789, Freeport is a town that has transformed itself into an outlet shopping village. I think it all started with L.L. Bean since this is where this retailer of outdoor clothing and equipment got its start. Now there is a vast selection of outlet stores, some of which occupy original vintage buildings.