Top of the Rockies - Scenic and Historic Byway Top of the Rockies - Scenic and Historic Byway, Red Cliff, CO, 80461(800) 933-3901WebsiteOverviewDesignated a National Scenic Byway in 1998. Related ArticlesFall Drives: 5 Color-Drenched Colorado Scenic BywaysFind Your Perfect Fall Adventure in ColoradoFall Color Camper Van Road Trips: Part 1, Drives Near DenverA Day of Life on the Frontier in ColoradoFall Color Camper Van Road Trips: Part 2, Mountains & Mesas10 Places to See Colorado's Fall Color