Rocky Mountain: the highest road in America and elk in the valley
The high mountains of Colorado, 1 hr 30 from Denver: a road that climbs to more than 3,700 metres, alpine lakes, elk and 4,000-metre summits.
Mesa Verde: the cliff dwellings of the Ancestral Puebloans
Entire villages built beneath the cliffs 800 years ago, in south-west Colorado. The largest group of cliff dwellings in the United States.
Great Sand Dunes: the tallest dunes in North America, at the foot of the Rockies
The tallest dunes in North America, at the foot of snow-capped mountains in Colorado, with a creek flowing at their feet in spring.
Black Canyon of the Gunnison: a chasm so narrow the sun barely gets in
A narrow, dark and dizzying canyon in western Colorado: sheer walls 600 to 800 metres high, which you look at from a series of overlooks.