1. The first state capitol building in Springfield was dedicated on December 25, 1839. It served as the center of Illinois government until the current capitol building was completed in 1888.

2. On December 25, 1847, the Illinois and Michigan Canal was completed, connecting the Great Lakes to the Mississippi River. This waterway played a critical role in the development of Chicago as a major transportation hub.

3. The largest snowfall in Illinois history occurred on Christmas Day in 1950. A total of 29 inches fell in Chicago, causing widespread chaos and leaving many residents stranded.

4. The first official Christmas tree lighting ceremony took place in Chicago's Grant Park on December 25, 1913. This tradition continues to this day and is a beloved holiday event for many Illinoisans.

5. December 25, 1777 is the birthdate of John Tanner, a famous frontier settler and fur trapper who lived in Illinois in the early 19th century. He was known for his incredible survival skills and his ability to communicate with Native American tribes.