Visit one of the 3 regional parks, three historic sites, two natural areas and two trails. Open year round. Indiana County Parks & Trails is a natural resource-based park system located in west central Pennsylvania. We operate 2,600 acres of parks, natural areas and historic sites along with an extensive regional trail system. The Indiana County Park system offers year-round facilities and activities for your use and enjoyment including an extensive environmental education program series. Our county parks and trails offer the chance to play, relax, improve your health and fitness and explore the natural world. We encourage and invite you to discover Indiana County Parks & Trails!