St. Mary's River State Park

St. Mary's Peninsula is part of the Western Shore region of Maryland. From the Charles County line, just north of Charlotte Hall, Maryland, to the southern tip of St. Mary's County at Point Lookout State Park, St. Mary's Peninsula stretches about 39 miles (63 km). It is bordered on the southwest by the Potomac River, on the north and east by the Patuxent River and on the east by Chesapeake Bay. From the end of these two rivers, the peninsula has about 15 miles of shoreline along the Bay's western shore from Lexington Park, Maryland to Point Lookout. Its shoreline stretches for a total of 536 miles along the Patuxent River, Potomac River and the Chesapeake Bay.Conterminous with the boundaries of St. Mary's County, the peninsula covers a land area of 361.25 square miles (935.6 km2).Northeast of St. Mary's Peninsula, on the opposite side of the Patuxent River, is the smaller Calvert Peninsula. Like St. Mary's Peninsula, Calvert Peninsula also has boundaries conterminous with a single Maryland county.

St. Andrew's Church is a historic church located at 44078 St. Andrew's Church Road, California near Leonardtown, St. Mary's County, Maryland. It was built in 1766 to serve as the parish church of St. Andrew's Parish, which had been established in 1744. It is a rectangular brick box church laid in Flemish bond with a gable roof and round-arched windows trimmed with brick segmental arches. At two corners stand two-story square brick towers with a diminutive spire. Richard Boulton designed the church in 1766; he was also responsible for the outstanding carving and ornamentation at Sotterley. George Plater (1735-1792), who briefly served as Maryland's governor before his death, was an active parish member, serving twenty-eight years as a vestryman.It was listed on the National Register of Historic Places in 1973.

Callaway is a census designated place in St. Mary's County, Maryland, United States. The elevation is 105 feet (32 m). Per the 2020 Census, the population was 1,779.

Cecil's Mill Historic District is a national historic district in Great Mills, St. Mary's County, Maryland. It consists of four buildings: Cecil's Mill, Cecil Store, the Cecil Home, and Old Holy Face Church. Cecil's Mill is a 2+1⁄2-story wood-framed structure, that was used until 1959. Across from the mill is the store, house, and Holy Face Church. The store was constructed in the 1920s and is a good example of a rural store. The Cecil Home was constructed in the late 19th century. Old Holy Face Church is a 2+1⁄2-story frame church that was abandoned in the 1940s.It was added to the National Register of Historic Places in 1978.

Wildewood is a planned community and census-designated place (CDP) in St. Mary's County, Maryland, United States. It is in east-central St. Mary's County, 7 miles (11 km) east of Leonardtown, the county seat, and 58 miles (93 km) southeast of Washington, D.C. It is bordered to the east by the unincorporated community of California. Wildewood was first listed as a CDP prior to the 2020 census which listed a population of 7,821.

California is a census-designated place and community in St. Mary's County, Maryland, United States. The population was 11,857 at the 2010 census, an increase of 27.4% from the 2000 census. California has been growing with the spread of population from the older adjacent community of Lexington Park and the growth in both technology-related and defense-related jobs at the Patuxent River Naval Air Station. There are department stores and numerous shopping centers situated along Maryland Highway 235 ("Three Notch Road"). Maryland Route 4 crosses Highway 235 in California, providing access to the wide Governor Thomas Johnson Bridge and the popular weekend resort town of Solomons on its opposite side. Bridge-bound traffic is notorious for backing up during rush hour.

Great Mills High School is a comprehensive public high school in Great Mills, Maryland, United States. It serves students in grades 9–12 in the mixed rural and suburban area at the confluence of the Potomac River, Patuxent River, and Chesapeake Bay. It belongs to the St. Mary's County Public Schools system, and is associated with two other county high schools: Leonardtown High School and Chopticon High School. The school is accredited by the Middle States Colleges and Secondary Schools and the Maryland State Department of Education. The school has an enrollment of more than 1,600, with an ethnic makeup reflecting the community: 51% Caucasian, 40% African American, 5% Asian, 4% Hispanic, and 1% other. Many of the families are employed by NAS Patuxent River, government contractors, St. Mary's College of Maryland, and others involved in the area's traditional agricultural and water-related businesses. Great Mills High School is among the oldest continually operating school in St. Mary's County and the State of Maryland. It was founded in 1929 as one of the original high schools in the county. The campus now encompasses several acres and has a football, soccer, and field hockey field and uses a county pool next door. The school houses a STEM program. Great Mills High School athletes are known as the Hornets. Great Mills High School Athletics belongs to the Southern Maryland Athletic Conference and competes in Division 3A in state competitions.

WMDM is a classic hits formatted broadcast radio station licensed to Lexington Park, Maryland, serving Southern Maryland and the Northern Neck. WMDM is owned and operated by Somar Communications, Inc.

Great Mills is an unincorporated community in St. Mary's County, Maryland, United States. Great Mills High School serves the lower end of the county, including the town (census CDP) of Lexington Park. The area is site of some of the oldest agricultural settlements in Maryland, as well as English speaking North America. It had many links to the original Maryland colony in St. Mary's City. It is also now a suburb of Lexington Park and the Patuxent River Naval Air Station.

St. Mary's County, established in 1637, is a county located in the U.S. state of Maryland. As of the 2020 census, the population was 113,777. Its county seat is Leonardtown. The name is in honor of Mary, the mother of Jesus. St. Mary's County comprises the California-Lexington Park, Maryland Metropolitan Statistical Area, which also is included in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area. It is part of the Southern Maryland region. The county was the home to the first Maryland Colony, and the first capital of the Colony of Maryland. Settled by English Catholics, it is considered to be the birthplace of religious freedom in North America, at a time when the British colonies were settled primarily by Protestants. The county is home to the Patuxent River Naval Air Station and St. Mary's College of Maryland. Traditionally, St. Mary's County has been known for its unique and historic culture of Chesapeake Bay tidewater farming, fishing, and crabbing communities. But with the advent of the military bases, growth of an extensive defense contractor presence, and the growth of St. Mary's College of Maryland, as well as increasing numbers of long-distance Washington, D.C. commuters, it has been undergoing a decades-long transformation which has seen the county's population double since 1970.

St. Mary's County Regional Airport (IATA: LTW, FAA LID: 2W6), also known as Captain Walter Francis Duke Regional Airport, is a public airport located in St. Mary's County, Maryland, United States, four miles (six km) northeast of the central business district of Leonardtown. The airport is also located 8 nmi (15 km) west of Naval Air Station Patuxent River. It is owned and operated by the St. Mary's County Board of County Commissioners.St. Mary's County Regional Airport has been in operation since 1969. The airport was re-dedicated as the Captain Walter Francis Duke Regional Airport in 2000. It recently reverted to its original name.

St. Richard's Manor is a historic home located at Lexington Park, St. Mary's County, Maryland. It is a 1+1⁄2-story Flemish bond brick dwelling, with a steeply pitched gable roof, constructed before 1750 on the Patuxent River. Also on the property are two tobacco barns built about 1935, and a small pyramid-roofed concrete block pumphouse.On December 16, 1652, "St. Richard's Manor" was re-patented to Luke Gardiner, heir of Richard Gardiner, because the original patent had been lost as a result of the internal strife with Ingle in 1645. Shortly afterwards /_that is in the 1650s _/ Richard Edelen was contracted by Luke to build a second house on the Manor. This house is still standing today on fifty-five acres of the original land patent. Richard Edelen built a second house called "Riverview" (circa 1659) for Luke Gardiner near St. Clements Island. When bequeathing St. Richard's manor, Richard Keene stated "which was taken up in Luke Gardiner's name." This leads one to conclude that Luke Gardiner was given manorial rights and therefore when Richard Keene became possessed of the manor the rights and privileges of Court Baron became vested in Richard Keene as Lord of St. Richard's Manor.St. Richard's Manor was listed on the National Register of Historic Places in 1985.