1. January 20, 1859, marked the founding of Denver City, which later became the capital of Colorado. The founders were a group of gold prospectors who named the city after James W. Denver, the Kansas Territorial Governor at the time.

2. In 1887, the Silverton Railroad, also known as the "Million Dollar Highway," began construction in southwestern Colorado. The highway is now a popular scenic drive that winds through the San Juan Mountains.

3. On January 20, 1909, the Colorado General Assembly passed the Denver Charter, which established a city manager government for Denver. This system replaced the previous government structure of a mayor-council system.

4. January 20, 2006, also known as "Winterfest," marked the opening ceremony of the Winter Olympics held in Turin, Italy. Several Colorado athletes, including skier Lindsey Vonn and snowboarder Chris Klug, competed in the games and brought home medals.

5. On January 20, 2020, Colorado Governor Jared Polis announced that the state would become the first in the nation to cap the price of insulin at $100 per month. This move aimed to make the life-saving drug more affordable for the millions of Americans who rely on it to manage diabetes.