|Exposition Park was the first home of the Pittsburgh Pirates and was located near where Three Rivers Stadium was and PNC Park is currently. Home plate, the pitching rubber, and the bases were recently marked out by some members of SABR. But unfortunately the markers were only spray-painted and have already begun to fade. While a permanent marker does exist (see the 2nd photo above), it is nearer to PNC Park rather than at the actual site. Hopefully a permanent marker can be placed at home plate in the near future.