Abell, Maryland

The River View is a historic home located at Oakley, St. Mary's County, Maryland, United States. It is a 1+1⁄2-story, Flemish bond brick house that is one of the best preserved examples of its type in Lower Southern Maryland. It was built by the Gardiner family in the early 18th century, then purchased by Ignatius Fenwick, a prominent military figure in Maryland's Revolutionary War Navy. Also on the property are a number of early domestic dependencies that comprise the largest single collection of such buildings in St. Mary's County.The River View was listed on the National Register of Historic Places in 1976.

Oakley is an unincorporated community in St. Mary's County, Maryland, United States. The River View (a historic home located in Oakley) was listed on the National Register of Historic Places in 1976.

Avenue is an unincorporated community in what is familiarly called the "Seventh District" of St. Mary's County, Maryland, United States.

Coltons Point is an unincorporated community in what is popularly called the "Seventh District" of St. Mary's County, Maryland, United States. A small historical museum and a lighthouse are located there. Seasonal boat service carry visitors the short distance to the shrinking, uninhabited St. Clement's Island, where in 1634 the first European settlers arriving in Maryland landed and celebrated the first Catholic Mass in English-speaking North America. It was listed on the National Register of Historic Places in 1972. The ZIP Code for Coltons Point is 20626. The miraculous medal monument shown below has been moved to the property of a church in Mechanicsville.

Newtowne Neck State Park is a public recreation area located four miles (6.4 km) southwest of Leonardtown in St. Mary's County, Maryland. The state park sits on a peninsula that is surrounded by Breton Bay, St. Clements Bay, and the Potomac River. It is managed by the Maryland Department of Natural Resources.

Heron Island is a sandbar located in the Potomac River east-north-east of Saint Clement's Island in St. Mary's County, Maryland, United States. The closest town is Colton's Point, Maryland, 1⁄2 mile to the north. The island is named for the large numbers of herons seen by the European colonists when they arrived in 1634.

St. Clement's Island State Park is a Maryland state park on St. Clement's Island, an uninhabited Potomac River island lying one-half mile southeast of Colton's Point, St. Mary's County, Maryland. The park features a 40-foot stone cross dedicated to the beginnings of freedom of religion in the United States as well as a reconstruction of the historic Blakistone Island Light. It is the central feature of the St. Clement's Island Historic District that was listed on the National Register of Historic Places in 1972.

St. Francis Xavier Church and Newtown Manor House Historic District is the first county-designated historic district in Saint Mary's County, the "Mother County" of Maryland and is located in Compton, Maryland, near the county seat of Leonardtown. The district marks a location and site important in the 17th-century ecclesiastical history of Maryland, as an example of a self-contained Jesuit community made self-supporting by the surrounding 700-acre (2.8 km2) farm. The two principal historic structures were added to the National Register of Historic Places in 1972. Archaeological remains associated with the site date back to the early colonial period, mid-17th century.

The Blackistone Island Light was a lighthouse located on what is now St. Clement's Island on the Potomac River in Maryland. It is best known as the target of a Confederate raid in the Civil War. Completed in 1851, the structure was destroyed by fire in 1956 and its shell was razed; a replica was completed in 2008. The lighthouse replica can be visited on weekends from June through October. After driving to the St. Clement's Island Museum, one may take a water taxi on weekends and walk the grounds. A 50-foot (15 m) cross is also on the island. The lighthouse is open on Saturdays and the first Sunday of every month from June through October.

Carpenters Island was an island located at the head of St. Clement's Bay in St. Mary's County, Maryland, patented in 1847 to Susan E. Carpenter, Amanda Carpenter, Rebecca Carpenter, and Matilda Carpenter and certified in the name of William Carpenter. The land patented included surrounding waters and measured one and three quarter acres. In 2005, the island was included in a list of "lost islands" of Chesapeake Bay, which is situated between Maryland and Virginia in the United States.

Bushwood is an unincorporated community in what is familiarly called the "Seventh District" of St. Mary's County, Maryland, United States. Ocean Hall was listed on the National Register of Historic Places in 1973. The ZIP Code for Bushwood is 20618.