Riverfront Stadium, also known as Cinergy Field from 1996 to 2002, was a multi-purpose stadium in Cincinnati, Ohio, United States that was the home of the Cincinnati Reds of Major League Baseball from 1970 through 2002 and the Cincinnati Bengals of the National Football League from 1970 to 1999. Located on the Ohio River in downtown Cincinnati, the stadium was best known as the home of "The Big Red Machine", as the Reds were often called in the 1970s.
Construction began on February 1, 1968, and was completed at a cost of less than $50 million. Riverfront's grand opening was held on June 30, 1970, an 8-2 Reds loss to the Atlanta Braves. Braves right fielder Hank Aaron hit the first home run in Riverfront's history, a two-run shot in the first inning which also served as the stadium's first runs batted in. Two weeks later on July 14, 1970, Riverfront hosted the 1970 Major League Baseball All-Star Game. This game is best remembered for the often-replayed collision at home plate between Reds star Pete Rose and catcher Ray Fosse of the Cleveland Indians.
In September 1996, Riverfront Stadium was renamed "Cinergy Field" in a sponsorship deal with Greater Cincinnati energy company Cinergy. In 2001, to make room for Great American Ball Park, the seating capacity at Cinergy Field was reduced to 39,000. There was a huge in-play wall in center field visible after the renovations, to serve as the batter's eye. The stadium was demolished by implosion on December 29, 2002.