Experience Colorado, New Mexico, and Utah on a nine-day roundtrip from Denver. Visit the Colorado Railroad Museum and Garden of the Gods. Next, ride the rails, including Pike’s Peak Cog Railway, Royal Gorge Route Railroad, Cumbres & Toltec Scenic Railroad, and Durango & Silverton Narrow Gauge Railroad, before taking in Mesa Verde National Park, Arches National Park, and Rocky Mountain National Park.