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 ArticlesColorado Scenic Byway: Top of the Rockies & LeadvilleColorado Scenic Byways Profile: Cache la Poudre-North ParkRV Itinerary: Pawnee Pioneer Trails & Northeast ColoradoA Day of Life on the Frontier in ColoradoBlaze Your Own Trail: Self-Guided Tours to Discovery in ColoradoMake Durango Your Home Base for Adventure in Colorado