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 Articles99 Gorgeous Places in Colorado: Part 1, The Postcard PlacesAspen Viewing: Drives to See Fall Leaves in ColoradoExplore 5 of Colorado’s Epic Mountain RangesBlaze Your Own Trail: Self-Guided Tours to Discovery in ColoradoMesa Verde National Park ItineraryFall Festivals & Fall Drives: Perfect Colorado Pair