1) In 1876, Colorado became the 38th state in America on August 15. Soon after, the state celebrated its Independence Day on August 1 and Statehood Day on August 15.

2) On August 15, 1911, Rocky Mountain National Park was established in Colorado. The park is home to over 300 miles of hiking trails, breathtaking landscapes, and diverse wildlife.

3) The Colorado State Fair begins every year on August 15 and lasts for 11 days. The fair showcases the state's agriculture and offers entertainment, rides, and food.

4) In 1967, the Silverton Northern Railroad was converted into a museum in Silverton, Colorado. Visitors can take a historic train ride and learn about the mining history of the area.

5) On August 15, 1969, the legendary music festival Woodstock began in Bethel, New York. Though it was not held in Colorado, the event inspired many in the state's music scene and cultural movement.