The Byrd Leibhart Site in Native Lands County Park, Lower Windsor Township, Pennsylvania, preserves the remains of a late 17th-century fortified settlement. After artifacts were first found in 1929, excavation in July and August 1970 identified a village area, a stockade, a longhouse, and three cemeteries, revealing the layout of a defended community. Archaeologists also uncovered Native and European trade goods from the same period, showing contact and exchange alongside daily settlement life. Its addition to the National Register of Historic Places in 2009 recognized the site's importance as a documented archaeological landscape in southeastern Pennsylvania.