St. Francis Xavier Church and Newtown Manor House Historic District

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.

Compton is an unincorporated community near Leonardtown in St. Mary's County, Maryland, United States. The St. Francis Xavier Church and Newtown Manor House Historic District where listed on the National Register of Historic Places in 1972. The ZIP Code for Compton is 20627.

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.

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.

Abell House is a historic home located at Leonardtown, St. Mary's County, Maryland, United States. It was constructed about 1910 and is a two-story, three bay frame dwelling. The house commands sweeping views of Breton Bay, a sheltered harbor of the Potomac River. It exhibits a vernacular interpretation of the Queen Anne. It was built by Enoch B. Abell, a significant local political leader, attorney, and entrepreneur, who resided there until his death in December 1924.Abell House was listed on the National Register of Historic Places in 2003.

Tudor Hall is a historic home located at Leonardtown, St. Mary's County, Maryland. It is a large, rectangular, 2+1⁄2-story, Georgian brick building built about 1798. It is one of the oldest buildings in Leonardtown, which was created by the Maryland Legislature in 1720. It is home to the St. Mary's County Historical Society. It was listed on the National Register of Historic Places in 1973.

Beauvue is an unincorporated community in St. Mary's County, Maryland, United States. Mulberry Fields was listed on the National Register of Historic Places in 1973.

Leonardtown is a town in and the county seat of St. Mary's County, Maryland, United States. The population was 4,563 at the 2020 census. Leonardtown is perhaps most famous for the national oyster-shucking championship that is held annually at the St. Mary's County fairgrounds. Historic Leonardtown includes both a large public high school and a public middle school Leonardtown Middle School as well as a Catholic high school and an elementary school Leonardtown Elementary School, offices of the county government, and St. Mary's Hospital which serves the healthcare needs of the county. The College of Southern Maryland maintains a growing satellite campus within city limits, including an aquatic center. An upscale home development located in the Breton Bay area is just outside town, notable for both its country club golf course and swimming pool. Leonardtown's population has grown significantly since 1990 as a result of the town's proximity to Patuxent River Naval Air Station and the Washington metro area.

Clements is an unincorporated community in St. Mary's County, Maryland, United States. Clements is located in northern St. Mary's County. ZIP Code 20624—Area Code 301—Time Zone Eastern—Population 1,282. The community derives its name from Saint Clement parish on the island of Jersey.

Buena Vista, or Bard's Field on Trinity Manor, is a historic home located at Leonardtown, St. Mary's County, Maryland, United States. It is a 2+1⁄2-story, three-bay, Greek Revival-style frame dwelling with a 2-story, three-bay, frame, wing. It was built between 1840 and 1850, for George and Mary C. Combs.Buena Vista was listed on the National Register of Historic Places in 1998.

St. Mary's Ryken High School, located on an 87-acre (350,000 m2) waterfront campus on Breton Bay, is a coeducational, secondary school sponsored by the Xaverian Brothers. SMR is a member of the National Association of Independent Schools and is accredited by the Middle States Association of Colleges and Secondary Schools, and recognized as an independent, Catholic school by the Archdiocese of Washington and the Maryland State Department of Education.The campus has a 1,000-seat sports stadium with a turf field and six-lane track and seven buildings: Paschal Hall; The Donnie Williams Center; Rupert Hall; Romuald Hall; Xavier Hall; Alumni Hall (cafeteria); and Lambert Hall (business office). Approximately 99% of each graduating class pursues a higher education at a college, university or military service academy. In the Class of 2021, students received over $22 million in scholarship offers.St. Mary's Ryken provides education for almost 700 students in grades 9-12 and is the only Catholic high school affiliated with the Archdiocese of Washington in the three Southern Maryland counties. Students come from St. Mary's, Calvert, Charles, southern Prince George's, and King George counties. The school colors are blue, green and white, and the official mascot is the knight.