1. The Ohio Statehouse was completed on January 31, 1861. This iconic building, which still serves as the seat of Ohio's government, took over 20 years to build and cost nearly $1.3 million. Its impressive architecture and historical significance have made it a popular tourist destination.

2. The Ohio State Penitentiary was opened on January 31, 1834. Located in Columbus, this maximum-security prison housed some of Ohio's most dangerous criminals, including infamous serial killer Ted Bundy. It was closed in 1984 due to overcrowding and was ultimately demolished in 1998.

3. On January 31, 1913, the Great Miami River in Dayton, Ohio, flooded, causing widespread destruction and claiming the lives of over 360 people. This disaster remains one of the deadliest floods in American history and prompted the city to make significant improvements to its infrastructure and flood control systems.

4. Ohio native Neil Armstrong, the first person to walk on the moon, was born on January 31, 1930. Armstrong grew up in Wapakoneta and went on to become a renowned astronaut and symbol of American achievement in space exploration.

5. The first professional football game in Ohio took place on January 31, 1903, between the Massillon Tigers and the Akron Indians. This landmark event helped establish professional football as a popular American sport and set the stage for the rise of teams like the Cleveland Browns and Cincinnati Bengals.