FNB Field (formerly known as Metro Bank Park) is a baseball park in Harrisburg, Pennsylvania, USA, located on City Island, in the Susquehanna River. It is the home field of the Harrisburg Senators, the Double-A minor league affiliate of the Washington Nationals, as well as Penn FC of the USL. The original structure was built in 1987 and it was called Riverside Stadium until 2004. Currently, the ballpark has a capacity of 6,187 people. The ballpark received a $45 million renovation that began in 2008.