Smithsonian Environmental Research Center

YMCA Camp Letts is a 220-acre (0.89 km2), co-educational summer residence camp and conference center located on the Rhode River, south of Annapolis, Maryland that is run by the YMCA of Metropolitan Washington. The camp was founded in 1906.

Parkhurst is a historic home at Harwood, Anne Arundel County, Maryland. It is a large two-story frame house with a complex floor plan, reflecting the evolution of the dwelling. The original Gothic Revival vernacular, center-passage, double-pile plan house was constructed about 1848-1850 by Richard S. Mercer. Alterations and additions were made in the early 20th century, giving the house a Neoclassical appearance. Also on the property are a timber framed mid-19th century smokehouse and an early-20th century frame tobacco barn.It was listed on the National Register of Historic Places in 2001. Tobacco barn was replaced in 2014

Germantown is an unincorporated community located in Anne Arundel County of Maryland, United States, in the Baltimore-Washington Metropolitan Area.

South River is an unincorporated community in Anne Arundel County, Maryland, United States. South River Club was listed on the National Register of Historic Places in 1969.

The Rhode River is a 3-mile-long (5 km) tidal tributary of the West River in Anne Arundel County, Maryland. It is south of the South River. These are its named tidal creeks and coves starting at the upper end and going clockwise, with a lower-order tributary listed after the "&" symbol: Muddy Creek Fox Creek Sheephead Cove Sellman Creek Bear Neck Creek & Whitemarsh Creek Cadle Creek Boathouse CoveYMCA Camp Letts sits on a peninsula at the northern end of the Rhode River, and the Smithsonian Environmental Research Center occupies most of the northwestern shore of the Rhode River.

Cedar Park is a historic home at Galesville, Anne Arundel County, Maryland, United States. It was originally constructed in 1702 as a 1+1⁄2-story post-in-the-ground structure, with hand-hewn timbers and riven clapboards and chimneys at either end, the earliest surviving earthfast constructed dwelling in Maryland and Virginia. Later additions and modifications, in 1736 and in the early 19th century, resulted in the brick structure of today. Also on the property is a frame tenant house or slave quarters of the mid-19th century. It was the birthplace and home of Founding Father John Francis Mercer, and between 1825 and 1834 it was an academy for young women operated by his daughter, Margaret Mercer, as "Miss Mercer's School."Cedar Park was listed on the National Register of Historic Places in 1969.

Gresham is a historic home near Edgewater, Maryland. It is a large 2+1⁄2-story frame dwelling built in the late 1700s.John Gresham II lived at Gresham after 1686 on land owned by land-grant pioneer Captain Edward Selby.After the Selby heirs suffered financial setbacks, the plantation was owned briefly by the pirate William Cotter and then by assorted members of Colonel Nicholas Gassaway's family (his daughter Jane having married Cotter), including the sons of Captain John Gassaway, Lord High Sheriff of Annapolis. The Gresham family continued to own the house on rented Gassaway land then known as Cotter's Desire. Gresham is most associated with Commodore Isaac Mayo, who received it from his uncle who had purchased the property and house from the Cotter/Gassaway heirs around 1765. He occupied the property beginning in the early 19th century until his controversial death there in 1861 at the dawn of the Civil war he openly opposed.It was listed on the National Register of Historic Places in 1990.

The South River Club is a social club located just south of Annapolis in Anne Arundel County, Maryland. The name also refers to the group's clubhouse, which was built in 1742.

Selby-on-the-Bay (often just called Selby) is a census-designated place (CDP) in Anne Arundel County, Maryland, United States, for the 2000 census, at which time its population was 3,674. It was added to the Mayo CDP for the 2010 census.

Birds Mill Swamp is a swamp located just west of the Chesapeake Bay in Anne Arundel County on the Atlantic Coastal Plain region of Maryland in the United States. It lies between Maryland Route 468 (also known as Muddy Creek Road) and Route 2 and is just south of Mill Swamp Road. Its coordinates are 38.88167°N 76.57444°W / 38.88167; -76.57444.

The West River is a 6-mile-long (9.7 km) tidal tributary of Chesapeake Bay in southern Anne Arundel County, Maryland. It is south of the Rhode River, which is one of its tributaries, and north of Herring Bay. These are its named tidal creeks and rivers starting at the southern edge of its mouth and going clockwise: Parish Creek Lafayette Creek (unofficial name) South Creek Upper West River/Fords Creek (latter is an unofficial name) Johns Creek Smith Creek Lerch Creek Tenthouse Creek & Cox Creek (Cox is a tributary of Tenthouse) Popham Creek Scaffold Creek Cheston Creek Rhode River

Beverley Beach is an unincorporated community in Anne Arundel County, Maryland, United States.Beverley Beach is now a county park. In 2019 Maryland's Natural Resources Department mandated that the Beverley Beach Community Association open the beachfront to the public. Parking for the beach is only available at the main entrance at Beverly Triton Nature Park at 1202 Triton Beach Road Edgewater, MD 21037. Parking in the community to access the park is prohibited.