Susquehanna National Heritage Area

Dritt Mansion, named after its longest occupants, and also called Pleasant Garden, and current home to the Zimmerman Center for Heritage, is a historic home located at Lower Windsor Township, York County, Pennsylvania. It was built about 1758, and is a 2+1⁄2-story, fieldstone dwelling. It measures 50 feet (15.2 m) long and 40 (12.2 m) feet wide, with a cedar-shingled gable roof. The house has remained virtually unchanged since its construction. The land the house is on was first granted by Lord Baltimore to Thomas Cresap in 1729, who operated a ferry here and claimed the area for Maryland. Cresap was arrested in 1736 and driven away after skirmishes known as "Cresap's War"—a dispute finally resolved in 1784 when the Mason–Dixon line was established. Today the home plays host to Heritage Area offices and programs and the Visions of the Susquehanna River Art Collection.It was added to the National Register of Historic Places in 1977.

The Byrd Leibhart Site, designated 36 YO 170 is a historic archaeological site located in Native Lands County Park at Lower Windsor Township, York County, Pennsylvania. It was the site of a late 17th-century fortified settlement. Artifacts were first discovered in 1929, and an excavation undertaken by the Pennsylvania Historical and Museum Commission took place in July–August 1970. The excavation identified three cemeteries, a village component, stockade, and a longhouse. The excavations uncovered a range of native and European trade goods dating to the late 17th century.It was added to the National Register of Historic Places in 2009.

Cabin Creek is a 11.0-mile-long (17.7 km) tributary of the Susquehanna River in York County, Pennsylvania in the United States. Cabin Creek joins the Susquehanna near the outskirts of East Prospect borough.

The Oscar Leibhart Site, designated (36YO9) is a archaeological site located in Lower Windsor Township, York County, Pennsylvania. It was the site of both prehistoric and protohistoric occupation. Digging by landowner Oscar Leibhart began by 1910 with extensive amateur excavations of burials occurring between 1925 and 1936. The Pennsylvania State Museum undertook the excavation of a longhouse in 1956. Additional excavation by Pennsylvania State Archaeologist Barry Kent took place in August 1975. Artifacts uncovered from the site date to the Early Woodland Period (1000 B.C.–200 B.C.) and to the mid-17th century.A Susquehannock village that was home to roughly 1,200 people was located here from c. 1665 to 1675. The pallisaded village was located on a hilltop 900 feet (270 m) west of the river and 100 feet (30 m) above it. The palisaded village appears on Augustin Herrman's 1670 map of Virginia and Maryland. Three indigenous cemeteries associated with the village have been identified.The site was added to the National Register of Historic Places in 1984., and was purchased from the Leibhart family in 2008 by the Archaeological Conservancy.

Burgholtshouse, or Burgholts House, is a historic home located at Lower Windsor Township, York County, Pennsylvania. It was built about 1820, and is a large 2+1⁄2-story, Georgian-style stone dwelling. It is five bays wide and has a gable roof. It features a second story front porch.It was added to the National Register of Historic Places in 1979.

The Conejohela Flats are a group of islands in the flooded Conejohela Valley, a large floodplain along the southernmost 30 miles (50 km) of the Susquehanna River in Pennsylvania and Maryland in the United States. The valley was flooded primarily during the early 1900s by the construction of the Holtwood, Conowingo, and Safe Harbor dams from 1910 to 1931.

East Prospect is a borough in York County, Pennsylvania, United States. The population was 932 at the 2020 census.

Lower Windsor Township is a township in York County, Pennsylvania, United States. The population was 7,511 at the 2020 census. Samuel S. Lewis State Park overlooks the Susquehanna River in the eastern part of the township.

The Frey-Haverstick Site (36LA6) is a prehistoric and historic archaeological site located in Manor Township, Lancaster County, Pennsylvania. The site was excavated in 1931, 1971, and 1975 by the Pennsylvania Historical and Museum Commission. Artifacts on the site were discovered as early as 1873, and included a helmet of Swedish origin dated to the reign of King Gustavus II Adolphus (1611–1632). The site features a Susquehannock cemetery, a Middle Woodland habitation site, and a Shenks Ferry village. Various artifact date activities on the site between 3500 BC. and 1650 AD.It was listed on the National Register of Historic Places in 1986.

Washington Boro is an unincorporated community and census-designated place (CDP) in Manor Township, Lancaster County, Pennsylvania, United States, along the Susquehanna River. The ZIP code is 17582. It is served by the Penn Manor School District and is the terminus of Pennsylvania Route 441 and Pennsylvania Route 999. As of the 2010 census, the population was 729.

Craley is an unincorporated community within the township of Lower Windsor, in York County, Pennsylvania, United States. Craley is located on Pennsylvania Route 624, two miles south of East Prospect.

Strickler Site is a historic archaeological site located at Manor Township, Lancaster County, Pennsylvania. It is the site of a large, stockaded Susquehannock village dated to the 17th century. Excavations revealed nearly 13 longhouse patterns and cemeteries including hundreds of interments.It was listed on the National Register of Historic Places in 1973.