Caledon State Park in King George, Virginia, occupies 2,587 acres along the Potomac River on land once part of Caledon Plantation, a property established in 1659 and initially owned by the Alexander brothers, founders of Alexandria. The site became state-owned in 1974 and had grown into a well-visited park by 2010. Its significance lies in both history and conservation: a 302-acre section, the Caledon Natural Area, was named a National Natural Landmark in 1974 for its old-growth oak and tulip poplar forest, and the park is especially noted for bald eagle habitat protected further by the adjacent Chotank Creek Natural Area Preserve.