1. In 1881, the first Denver & Rio Grande train arrived in the town of Durango, Colorado, marking the beginning of a new era in transportation for the region.

2. In 1933, the first flight between Colorado and California was completed by Transcontinental & Western Air (TWA), marking a significant milestone in the development of air travel.

3. On July 22, 1969, Apollo 11 astronaut Neil Armstrong stepped onto the surface of the moon, an event that captured the attention of people all over the world, including those in Colorado.

4. In 1993, Colorado's Black Canyon of the Gunnison National Park was designated a UNESCO World Heritage Site, recognizing the unique features and natural beauty of the area.

5. In 2012, the Colorado wildfires burned over 200,000 acres across the state, destroying numerous homes and forcing many residents to evacuate. The fires were some of the most destructive in Colorado history, and served as a reminder of the power and unpredictability of nature.