ARMCO Park was generously donated in 2007 and is owned and operated by the Butler County Family YMCA. Nestled on 75 scenic acres along Slippery Rock Creek, the park is OPEN to the Public! ARMCO Park features a family-friendly Splash Pad! The Park also features the PlayMill Playground, full size outdoor basketball court, sand volleyball court, fishing dock and a 1-mile walking trail. Three picnic pavilions and ARMCO Hall are available to reserve and would be perfect for a family reunion, sports celebration or graduation party. The historic Dance Hall is perfect for a beautiful wedding reception!