The 1989 Pittsburgh Pirates season was the 108th season of the Pittsburgh Pirates franchise; the 103rd in the National League, it was their 20th season at Three Rivers Stadium, Three Rivers Stadium was a multi-purpose stadium located in Pittsburgh, in which state?
1989 Pittsburgh Pirates season:  This was their 20th season at Three Rivers Stadium. Three Rivers Stadium: Three Rivers Stadium was a multi-purpose stadium located in Pittsburgh, Pennsylvania, from 1970 to 2000.
Pennsylvania