Hillside Park is located just outside of downtown Greenfield. The property is a gently sloped, open site with a softball field, playground, and asphalt basketball court. It was renovated in 2009/2010, with many park improvements including a new basketball court, new playground equipment, park benches, picnic tables, a softball field, a partially paved path, resurfaced parking lots as well as a new Splash Pad built in 2015.