Many long-time baseball fans have great memories of Pittsburgh's Forbes Field, such as Roberto Clemente throwing runners out at home from deep right field. Many of us who weren't alive to see baseball in Forbes Field are rather familiar with this highlight, Bill Mazeroski's walkoff homer in Game 7 of the 1960 World Series:
The Pirates moved to Three Rivers Stadium after a doubleheader on June 28, 1970, though, and the venerable stadium was abandoned for a brief period of time.
Here's what it looked like, via @MLBcathedrals on Twitter:
The stadium was demolished and cleared for use by the University of Pittsburgh after a fire in July of 1971.
Forbes Field wasn't just home to the Pirates. It was in use from 1909-70 and housed home games for the Steelers (NFL), Homestead Grays (Negro Leagues), University of Pittsburgh (both baseball and football) and more. There were even some famous boxing matches in Forbes. It was a major part of Pittsburgh for the better part of the 20th century.