Nolands Ferry I Archeological Site

Tuscarora Creek is a 12.8-mile-long (20.6 km) tributary of the Potomac River in Frederick County, Maryland, in the United States. The creek rises east of the community of Jefferson, about 6.4 miles (10.3 km) southwest of the city of Frederick, and flows south to its mouth at the Potomac.

Saleaudo is a historic home located at Adamstown, Frederick County, Maryland, United States. It is a two-story brick house built about 1856, with four interior brick chimneys. The house features murals painted by Constantino Brumidi and Filip Castaggini in the entrance hall.Saleaudo was listed on the National Register of Historic Places in 1979.

Clapham's Ferry, also known as Spinks Ferry, Lost Corner Farm, and Riverside, is a historic home located near Leesburg, Loudoun County, Virginia. It consists of a 2+1⁄2-story, three bay, Federal style main block of red sandstone, with a two-story sandstone kitchen addition built about 1849. It has a standing seam metal gable roof. Also on the property are the contributing log kitchen building, meat house, bank barn, corn crib, and tenant house. The property is also historically significant as the site of an early ferry crossing connecting Loudoun County, Virginia, with Maryland.It was listed on the National Register of Historic Places in 1997.

The Monocacy River () is a free-flowing left tributary to the Potomac River, which empties into the Atlantic Ocean via the Chesapeake Bay. The river is 58.5 miles (94.1 km) long, with a drainage area of about 970 square miles (2,500 km2). It is the largest Maryland tributary to the Potomac. The name "Monocacy" comes from the Shawnee name for the river Monnockkesey, which translates to "river with many bends." (However, another local tradition asserts that "Monocacy" means "well-fenced garden" in an Indian language.) The Monocacy National Battlefield lies alongside part of the river, marking an 1864 engagement during the American Civil War, the Battle of Monocacy Junction. The Chesapeake and Ohio Canal crosses over the river at the Monocacy Aqueduct, the largest of the 11 aqueducts on the canal.

The Monocacy Aqueduct — or C&O Canal Aqueduct No. 2 — is the largest aqueduct on the Chesapeake and Ohio Canal, crossing the Monocacy River just before it empties into the Potomac River in Frederick County, Maryland, USA. The 438 foot (133.5 m) aqueduct was built by three separate contractors between 1829 and 1833 at a cost of US$127,900.

The Little Monocacy River is a 10.1-mile-long (16.3 km) tributary stream of the Potomac River. Despite its name, the stream does not feed into the Monocacy River. The Little Monocacy is located almost entirely in Montgomery County, Maryland, and enters the Potomac just downstream from where the Monocacy enters the Potomac. Its headwaters rise southwest of Comus, and most of its approximately 17-square-mile (44 km2) watershed is farmland and pasture (60.56%) or forested land (36.03%).

The Dickerson Whitewater Course, on the Potomac River near Dickerson, Maryland, was built for use by canoe and kayak paddlers training for the 1992 Olympic Games in Spain. It was the first pump-powered artificial whitewater course built in North America, and is still the only one anywhere with heated water. It remains an active training center for whitewater slalom racing, swiftwater rescue training, and other whitewater activities. The facility is owned by the NRG Energy company. Except during special events, access requires membership in the Potomac Whitewater Racing Center, a USA Canoe/Kayak National Training Center.The course was constructed in 1991, inside a pre-existing straight, 900-foot (270 m)-long concrete channel, 40 feet (12 m) wide. Since 1959, the channel has returned cooling water from the Dickerson Generating Station to the Potomac River, 41 miles (66 km) upstream from Washington, D.C. Water is pumped from the river, warmed as much as 35 °F (20 °C) as it cools the power plant's three coal-fired generators, and then emptied into the channel for gravity flow back to the river. (The plant has three other generators which use a different cooling system.) Streamflow through the course is 200 cu ft/s (5.7 m3/s) to 600 cu ft/s (17 m3/s), depending on the operation of the plant's three coal-fired generators and their six cooling water pumps. In the summer months, when water temperature in the channel exceeds 100 °F (38 °C), the course is closed for health reasons. It is also closed when the Potomac River rises above 5 feet (1.5 m) on the Little Falls gauge 20,000 cu ft/s (570 m3/s), flooding the lower section of the course.

The Dickerson Generating Station is an 853 MW electric generating plant owned by NRG Energy, located approximately two miles west of Dickerson, Maryland, on the eastern banks of the Potomac River.

Heater's Island Wildlife Management Area is a Wildlife Management Area in Frederick County, Maryland. Heater's Island is a large forested island in the Potomac River near Point of Rocks, Maryland. It was long inhabited by the Piscataway people, who were forced to leave by smallpox in 1705.

The Islands of the Potomac Wildlife Management Area is a Wildlife Management Area (WMA) consisting of 30 islands in the Potomac River in Maryland along its border with the state of Virginia. It is administered by the Maryland Department of Natural Resources. Islands of the Potomac WMA protects 824 acres (3.33 km2) of wildlife habitat in Allegany (80 acres [0.32 km2]), Washington (6 acres [0.024 km2]), Frederick (223 acres [0.90 km2]) and Montgomery (515 acres [2.08 km2]) counties. The islands are accessible only by boat. Within the WMA is established the Islands of the Potomac Wildland (see Maryland Wildland), consisting of about 82% (676 acres [2.74 km2]) of the total area. Of the 30 islands, three in Montgomery County are open to public hunting: Oxley Island, Mason Island and Maddox Island.

Point of Rocks is a historic passenger rail station on the MARC Brunswick Line between Washington, D.C., and Martinsburg, WV, located at Point of Rocks, Frederick County, Maryland, United States. The station was built by the Baltimore and Ohio Railroad in 1873, and designed by E. Francis Baldwin. It is situated at the junction of the B&O Old Main Line (running to Baltimore) and the Metropolitan Branch (running to Washington, D.C.). The Met Branch also opened in 1873 and became the principal route for passenger trains between Baltimore, Washington and points west. The main station building is a 2+1⁄2-story, triangular Gothic Revival with a four-story tower and a 1+1⁄2-story wing at the base. The tower has a pyramidal roof containing a dormer on each side. On top is a square cupola supporting a pyramidal peaked roof.The station building itself is not open to the public and is used by CSX as storage and offices for maintenance of way (MOW) crews until 2022 when it's windows were boarded and the MOW facilities relocated to Brunswick to the west. In 2008, new platforms and platform shelters were built for MARC commuters traveling east towards Washington DC, replacing older bus shelter–style structures which were erected in the mid-1990s. During the blizzard of 2010, the south side awning on the main building collapsed under the weight of record snow fall, and was later removed, leaving half the building missing cover. In January 2011, work to rebuild the destroyed part of the structure began. The Point of Rocks Railroad Station was listed on the National Register of Historic Places in 1973, and reopened for the Maryland Rail Commuter Service, now called MARC, which established the Brunswick Line. The Duke Energy Holiday Trains display at the Cincinnati Museum Center features a station modeled on Point of Rocks As does the Frederick County Society of Model Railroaders exhibit at the Walkersville Southern Railroad. In 2023, the station will be featured on a USPS Forever stamp in a 5-stamp "Railroad Stations" series. The stamp illustrations were made by Down the Street Designs, and Derry Noyes served as the art director.Plans are currently underway for the Maryland Department of Transportation to renovate and open the interior of the station for passenger use once negotiations with CSX conclude over site clean up. Future plans include adding a new platform on the wye to serve trains to and from Frederick to increase capacity for the current service as well as additional facilities including an increase in available parking and access for busses serving the station.

St. Paul's Episcopal Church is a parish of the Episcopal Church near Point of Rocks, Frederick County, Maryland, in the Episcopal Diocese of Maryland. It is noted for its historic parish church, a small late Federal style brick structure built in 1842.