1. In 1825, the first steamboat arrived in St. Louis, Missouri, marking the beginning of a new era in transportation and commerce for the city.

2. On June 10, 1964, Dr. Martin Luther King Jr. delivered a speech at St. Louis University in which he spoke about the importance of nonviolence in the civil rights movement.

3. The Gateway Arch in St. Louis was completed on June 10, 1965, after two and a half years of construction. The iconic structure stands 630 feet tall and is the tallest arch in the world.

4. On June 10, 2002, the Missouri Supreme Court ruled that the state's law banning same-sex marriage was unconstitutional, paving the way for marriage equality in the state.

5. In 2011, the Joplin Tornado devastated the city of Joplin, Missouri, killing 161 people and causing billions of dollars in damage. The tornado was one of the deadliest and most destructive in American history.