Doubleday Hill Monument

Conococheague Creek, a tributary of the Potomac River, is a free-flowing stream that originates in Pennsylvania and empties into the Potomac River near Williamsport, Maryland. It is 80 miles (129 km) in length, with 57 miles (92 km) in Pennsylvania and 23 miles (37 km) in Maryland. The watershed of Conococheague Creek has an area of approximately 566 square miles (1,470 km2), out of which only 65 square miles (170 km2) (12% of the area) are in Maryland. The word "Conococheague" is translated from the Delaware Indian or Unami-Lenapi term òk'chaxk'hanna, which means "many-turns-river." The Conococheague, or Connogochegue, as it was known at the time, was the northernmost extent of the range along the Potomac within which Congress in the Residence Bill of 1790 authorized the establishment of the Federal District, known as the District of Columbia. By presidential proclamation, George Washington placed the District at the lower end of the range, near the "Eastern Branch", later Anacostia River, which marked the southernmost extent of the Residence Bill's range. The water divide between Conococheague Creek and Conodoguinet Creek is sometimes used as the boundary between the Hagerstown Valley and the Cumberland Valley.

The R. Paul Smith Power Station is a closed electric generating plant owned by FirstEnergy (formerly Allegheny Energy) in Williamsport, Maryland.

Williamsport Historic District is a national historic district at Williamsport, Washington County, Maryland, United States. The district consists of the historic core of this town. Almost 20 percent of the buildings in the district date from the late 18th and early 19th centuries. They are generally of log or brick construction until the second quarter of the 19th century. The district includes one of less than 10 banking houses still remaining in the US that were constructed during the first National Bank time frame, the Williamsport Banking Mansion, circa 1814. The town grew with the Chesapeake and Ohio Canal and railroads, which resulted in prominent late 19th century Italianate and Queen Anne style buildings for residential and commercial purposes. Slightly less than 60 percent of the buildings date from the late 19th and early 20th centuries.It was added to the National Register of Historic Places in 2001.

Williamsport is a town in Washington County, Maryland, United States. The population was 1,868 at the 2000 census and 2,137 as of 2010.

Maidstone-on-the-Potomac is a historic house and farm near Falling Waters, West Virginia. Located on the Potomac River immediately opposite Williamsport, Maryland, the property consists of a 218-acre (88 ha) tract with a main house dating from c. 1741. The house was built by Evan Watkins, who operated Watkins Ferry on the Potomac, which was used by George Washington and General Edward Braddock. In 1795 the property was sold to Peter Light. The Light family retained the property until 1854, substantially expanding the house. The ferry and house, by now known as Light's Ferry passed to Robert Lemen, who converted the ferry into a cable ferry. In 1861 the ferry was used by Union forces under Captain Abner Doubleday to cross into Virginia for raids. In 1863 Doubleday again crossed the river by fording while pursuing Robert E. Lee's Army of Northern Virginia as it advanced on Gettysburg. A month later, following Lee's defeat, 70,000 confederate soldiers crossed at Lemen's Ferry.In the late 19th century the first bridge crossing was built at this location. Today, US 11 crosses here, bisecting the property. The Watkins Family also became associated with the Boone Family during the time of their ownership of the Ferry. A great-great grandson, John Watkins (His father John T Watkins was born at Watkins Ferry), of the original Evan Watkins married Elizabeth Karn, a 1st and 2nd cousin of Daniel Boone's. Elizabeth was the daughter of Christopher Karn and Leah Boone. John and Elizabeth's son Christopher Columbus Watkins married Rachel Bristow who was the granddaughter of Leah's sister, Hannah Boone.

Springfield Farm is a historic home and farm located at Williamsport, Washington County, Maryland, United States. It was built in three distinct parts, with the center, or original section, dating from the second half of the 18th century. This two-story plus attic beaded clapboard house is five bays wide with an entrance in the center bay of both the first and second stories on the east façade. The property includes a springhouse and stillhouse both of rough fieldstone, and several smaller buildings. It was a home of Revolutionary War General Otho Holland Williams (1749-1794).It was listed on the National Register of Historic Places in 1974.The farm's barn was purchased by the Town of Williamsport, which now operates the Williamsport Town Museum in the former milk parlor.

Watkins Ferry Toll House was an historic toll house located at Martinsburg, Berkeley County, West Virginia. It was built in 1837, and was a small rectangular stone building, measuring approximately 17 feet wide by 23 feet deep. It had a gable roof and featured Greek Revival-style architectural details. While being used as a private dwelling, it burned on February 8, 1985. The remains of the foundation were finally removed in early 2004 to make room for a housing development.It was listed on the National Register of Historic Places in 1980.

Williamsport High School is a public high school in Williamsport, Washington County, Maryland, United States.

Washington County is located in the western part of the U.S. state of Maryland. As of the 2020 census, the population was 154,705. It is the most populous county in the Western Maryland region and its county seat is Hagerstown.Washington County was the first county in the United States to be named for the Revolutionary War general (and later President) George Washington. Washington County is one of three Maryland counties recognized by the Appalachian Regional Commission as being part of Appalachia. The county borders southern Pennsylvania to the north, Northern Virginia to the south, and the Eastern Panhandle of West Virginia to the south and west. Washington County is included in the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area, which is also included in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area.

Rose Hill, also known as Rose Hill Manor, is a historic home located near Williamsport, Washington County, Maryland, United States. It was built about 1802 and is a six-bay, two-story Flemish bond brick house with a hip roof and a "widow's walk." The interior details reflect the taste of the Adamesque Federal period.Rose Hill was listed on the National Register of Historic Places in 1973.

Elmwood is a historic 19th century estate at 16311 Kendle Road, northeast of Williamsport in Washington County, Maryland. The elegant Greek Revival estate house was built in 1855 by James Downey, a canal merchant. The 6-acre (2.4 ha) remnant of Downey's estate includes a 19th-century barn, milking barn, and hog barn.The estate was listed on the National Register of Historic Places in 2012.

Kemps Mill is an unincorporated community and census-designated place in Washington County, Maryland, United States. Its population was 126 as of the 2010 census. It is named after a 1739 built mill structure which still stands in 2020 and has operated under a variety of names through almost three centuries. The mill dam creates a slackwater which is popular for fishing and other recreational water activities. The mill is several miles above the mouth of the Conococheague Creek which flows to the Potomac River at a location where Native American trading posts existed for many centuries prior to European settlement in the area.