1. On August 23, 1883, the Northern Pacific Railroad spanned the Mississippi River for the first time, connecting Minneapolis and Saint Paul. This event largely contributed to the growth of the Twin Cities as a major commercial and transportation hub.

2. August 23, 1922, marked the opening of the State Fairgrounds Race Track in Falcon Heights, Minnesota. The track, which hosted horse and auto racing, was a popular venue until its closure in 1986.

3. On August 23, 1978, Minnesota Governor Rudy Perpich declared a state of emergency due to a severe drought that was affecting the state. The drought persisted for several years, causing extensive damage to crops and soil.

4. In 2013, August 23 was proclaimed "Cheap Trick Day" in the city of St. Paul, honoring the iconic rock band Cheap Trick, who performed at the Minnesota State Fair that evening.

5. August 23, 2006, marked the grand opening of the Science Museum of Minnesota's "Race: Are We So Different?" exhibit, which explored the social and scientific aspects of race through interactive displays and multimedia. The exhibit was a critical success and spurred further discussion on race and diversity issues in Minnesota.