
In the 1840s the Arkansas River was the border between territory claimed by the United States and Mexico. Located along the river, Bent's Fort was an adobe trading post on the Santa Fe Trail, where traders, trappers, travelers, and the Cheyenne and Arapaho tribes came together in peaceful terms for trade. Today, a reconstructed fort allows visitors to explore the front line of Westward Expansion.

Beneath a grassy mountain valley in central Colorado lies one of the richest and most diverse fossil deposits in the world. Petrified redwood stumps up to 14 feet wide and thousands of detailed fossils of insects and plants reveal the story of a very different, prehistoric Colorado.

The tallest dunes in North America are the centerpiece in a diverse landscape of grasslands, wetlands, forests, alpine lakes, and tundra. Stay on a moonless night to experience countless stars in this International Dark Sky Park! Open 24 hours a day, 7 days a week year-round. There are no timed entries or reservations to visit.

For over 700 years, the Ancestral Pueblo people built thriving communities on the mesas and in the cliffs of Mesa Verde. Today, the park protects the rich cultural heritage of 27 Pueblos and Tribes and offers visitors a spectacular window into the past. This World Heritage Site and International Dark Sky Park is home to over a thousand species, including several that live nowhere else on earth.

On November 29th, 1864, Chiefs Black Kettle, White Antelope, Left Hand and others were encamped with around 750 Arapaho and Cheyenne people in a valley by the Big Sandy Creek. A hope for peace, brought forth by Black Kettle was in the balance. It was a tragic day where the blood of the Cheyenne and Arapaho was shed, and a painful memory for generations of Native Americans was made.