R. B. Winter State Park is a Pennsylvania state park on 695 acres (281 ha) in Hartley Township, Union County, Pennsylvania in the United States. It is in the ridge and valley region of Pennsylvania and is surrounded by Bald Eagle State Forest. R. B. Winter State Park is in a shallow basin that is surrounded by ridges. Halfway Lake is the central recreational focus of the park. The park is 18 miles (29 km) west of Lewisburg on Pennsylvania Route 192.

McCalls Dam State Park is a Pennsylvania state park on 8 acres (3.2 ha) in Miles Township, Centre County, Pennsylvania in the United States. The park is in the easternmost tip of Centre County, south of Clinton County and north of Union County. McCalls Dam State Park is in a remote location on a gravel road between R. B. Winter State Park on Pennsylvania Route 192 and Eastville on Pennsylvania Route 880. The park can only be accessed in the winter months by snowmobiling or cross-country skiing.