The Hampstead Farm Archeological District is the site of a significant collection of Native American prehistoric and historic settlement remains in rural Orange County, Virginia. A survey of the farm's 780 acres (320 ha) in 1983 identified 49 different sites of archaeological interest. Sites were found near the adjoining Rapidan River, as well as in upland areas of the farm. Along with sites found at the nearby Montpelier estate, the upland sites demonstrate the significance of that area in Native American occupation patterns. Test pits dug near the river located well-preserved settlement sites at a depth of up to 2 metres (6.6 ft). The farm is also the location of minor military fortifications from the American Civil War.