1. On April 29, 1870, the Colorado Territorial Legislature passed a bill establishing the State Agricultural College and Agricultural Experiment Station (now Colorado State University) in Fort Collins. The institution has since become a leading research university focused on agriculture, engineering, and the environment.

2. In 1908, the town of Castle Rock was incorporated on April 29. Located midway between Denver and Colorado Springs, Castle Rock is known for its distinctive rock formations and historical downtown area.

3. On April 29, 1932, the Colorado State Capitol building was designated a National Historic Landmark. Built in the late 1800s and early 1900s, the Capitol features a distinctive gold dome and houses the offices of the Governor, Attorney General, Secretary of State, and other state officials.

4. In 1975, the Colorado Rockies played their first home game at Mile High Stadium in Denver on April 29. The team, which later moved to Arizona and became the Diamondbacks, played at the stadium until 1992.

5. On April 29, 2013, a massive winter storm hit Colorado. Known as the "Bomb Cyclone," the storm brought heavy snow, high winds, and widespread power outages to the state. The storm caused significant damage and disrupted travel for several days.