1. In 1876, the town of Waukesha was incorporated. Today, Waukesha is known for its natural springs and is often referred to as the "Spring City".

2. The Battle of La Crosse took place on June 25, 1856. This battle was part of the civil war in Kansas, and occurred when pro-slavery advocates from Missouri attacked abolitionists in La Crosse.

3. On June 25, 1870, the state of Wisconsin passed a law allowing women to vote in school board elections. This was one of the earliest voting rights granted to women in the United States.

4. Construction began on the Wisconsin State Capitol in 1906. The Capitol was completed in 1917 and is now a popular attraction in Madison.

5. In 1969, the first Earth Day in Wisconsin was celebrated on June 25. This event was part of a nationwide effort to raise awareness about environmental issues and promote sustainable practices.