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 Articles150 Ways to Celebrate Colorado: Spring & SummerColorado Scenic Byway: Unaweep TabeguacheColorado Hidden Gem: Last Dollar Road11 Most Instagrammable Places in Colorado4 Best Places to Stay in Colorado for History LoversDiscover the Four Corners Region: Things to Do