1. On June 23, 1845, the first steamboat arrived in Kansas City on the Missouri River. The Steamboat Knickerbocker was greeted by a large crowd and set the stage for Kansas City to become a major transportation hub in the Midwest.

2. On June 23, 1865, Union General E.D. Townsend arrived in St. Louis to officially parole Confederate prisoners of war. The parole process was a significant step in the post-Civil War reconciliation process and allowed Confederate soldiers to return home.

3. In 1933, June 23 marked the opening of the new Municipal Airport in Kansas City. The airport, which later became known as Kansas City International Airport, was a state-of-the-art facility and played a crucial role in the development of the city's aviation industry.

4. On June 23, 1986, the Supreme Court ruled in favor of Missouri in the landmark case Missouri v. Jenkins. The case centered around a desegregation plan for the Kansas City school district and established an important precedent for the use of court-ordered busing to integrate schools.

5. In 2003, June 23 marked the opening of the iconic Kauffman Center for the Performing Arts in Kansas City. The center, which was designed by renowned architect Moshe Safdie, has become a cultural landmark in the region and attracts visitors from around the world.