Drive Trail Ridge Road through the park, hike, and look for wildlife, birds, and wildflowers in season. Estes Park makes a good base for your exploration.
State capital Denver has a thriving downtown. You will find the "One Mile High" marker at the Capitol, and lots of shopping and dining.. The Arts District features street art and museums.
Great Sand Dunes National Park has some of the tallest sand dunes in the country, and is surrounded by scenic mountains. Go sandboarding or hiking, and enjoy photography.
While towns like Aspen, Vail, and Breckenridge rae famous for winter sports, you can visit them in other seasons as well, to hike, enjoy wildflower displays, or fall colors .