Greenwell is a 596-acre State Park located on the Patuxent River in St. Mary's County, Maryland. In 1971, John Phillip Greenwell, Jr. and his sister, Mary Wallace Greenwell, donated their 166.6 acr... More on marylandstateparks.org
This park on the Patuxent River is home to the Greenwell Foundation, offering therapeutic riding programs designed for individuals with disabilities. ... More on Search.visitmaryland.org

