The oldest active ballpark in MLB

Today’s question: Wrigley Field in Chicago, Yankees Stadium in New York and Dodgers Stadium are three of the most famous major league baseball stadiums in history but What is the oldest active ballpark in Major League Baseball?

Yesterday’s answer: The Washington Redskins defensive back Mike Bass recovered Miami Dolphins kicker Garo Yepremian’s botched field goal attempt for a touchdown in Super Bowl VII ?