Plus, it sits along the longest preserved stretch of the Mother Road.Exterior view of Mr. D’z Route 66 Diner.Credit: Kingman Office of TourismKey PointsGet your kicks at Kingman, Arizona, known as the “Heart of Historic Route 66.”Bone up on the history of the Mother Road at the Arizona Route 66 Museum and make the drive to the ghost town of Oatman.Enjoy classic diner fare at Mr. D’z Route 66 Diner or try the local brews at Black Bridge Brewing.W…