The oldest professional football stadium still actively used in the National Football League is Soldier Field in Chicago, Illinois, which originally opened its doors in October 1924. Initially named Municipal Grant Park Stadium before being renamed to honor American soldiers, it has served as the historic home venue for the Chicago Bears since 1971. Despite undergoing extensive modernizing renovations over the decades—most notably a major reconstruction project that updated its internal amenities—the venue retains its iconic neo-classical exterior colonnades, making it a legendary landmark of sports history.