Wrigley Field is finally a national landmark. The ballpark has been designated a National Historic Landmark, seven years after team owners first applied for the federal status. The decision affirms the significance of the 106-year-old stadium to the city of Chicago, professional sports and American history and culture. Wrigley Field was built in 1914. It is the second-oldest ballpark in Major League Baseball behind Boston’s Fenway Park. Wrigley became eligible for landmark status in 1987.