Deep Run (North Branch Patapsco River tributary)

Mt Pleasant is a historic home and farm located in Woodstock, Howard County, Maryland. The land grant of the property was surveyed by Patuxent Ranger Thomas Browne as "Ranter's Ridge" in 1692. The farm house is built around an original log cabin. In 1838 Samuel Brown (1810-1880) aggregates properties into a 232-acre farm. This included 192 acres of the Hammonds Ridge tract from Thomas Herbert and in 1859 an additional 40 acres from his brother John from the Good Fellowship tract. During this time a second story to the log cabin and an addition on the north side was constructed. In addition to farming Samuel Brown was elected to three consecutive terms as commissioner of the Howard District of Anne Arundel County starting in 1846.During the Civil War the farm was the hiding place of 1st Maryland Infantry, CSA General Bradley Tyler Johnson, and munitions storage for the nearby Doughoregan Manor. In 1993, the farm became the home of the Howard County Conservancy, a private land trust.

Patapsco is an unincorporated community in Carroll County, Maryland, United States, in the Baltimore metropolitan area. Major League Baseball player Ben Spencer was born in Patapsco.

Taylor-Manning-Leppo House is a historic home located near Finksburg, Carroll County, Maryland. The original section was built about 1860, and is a 2 ½-story log and frame bank house. It rests on a stone foundation, with an exposed full story in height across the front of the building.It was listed on the National Register of Historic Places in 2009.

Finksburg is an unincorporated community in Carroll County, Maryland, United States. It is the location of the National Security Agency's EKMS Central Facility. Finksburg is located at the intersection of Maryland Routes 91 and 140, on the border of Carroll and Baltimore counties. It is an unincorporated area approximately one mile northwest of the Liberty Reservoir and six miles southeast of Westminster. It is also mentioned in Season 3 Episode 8 of mayday. Finksburg is named after Adam Fink, owner of a local tavern and toll road in the early 19th century.

Montrose Mansion and Chapel, originally known as Montrose Mansion, is a historic home located on the campus of Camp Fretterd Military Reservation of the Maryland Army National Guard in Reisterstown, Baltimore County, Maryland. It is a two-story neoclassical stone house constructed originally about 1826 by William Patterson who gave it to his grandson, Jerome Napoleon Bonaparte as a wedding present. By the middle of the 19th century, a large two-story wing was added, then a mansard roof with round-top dormers, a cupola, and a bracketed cornice with pendants was added about 1880. The chapel was completed in 1855 and is a rectangular structure of stone with Greek Revival decorative detailing. It features a three-story bell and entrance tower.The mansion and tower are separated by about a quarter of a mile. It was listed on the National Register of Historic Places in 1990.

Houcksville is an unincorporated community in Carroll County, Maryland, United States. The Isaac Hoffman House was listed on the National Register of Historic Places in 1985.

Cold Saturday, or Cold Saturday Farm, is a historic home and farm complex located near Finksburg, Carroll County, Maryland. The house is significant for embodying the characteristics of Anglo-American gentry farms that are common in the Tidewater region.It was listed on the National Register of Historic Places in 2008.

The David Force Natural Resource Area is a 221-acre (89 ha) wildlife area in Ellicott City, Maryland. It is located between Route 70 and 40 adjacent to the Turf Valley development in Howard County, Maryland, and operated by the Howard County Department of Recreation and Parks. The resource area was created to protect water quality, provide habitat for wildlife, and support recreational hiking and nature observation purposes. Part of the area has been identified for a future 36-acre David Force Park to be developed in the 2028 - 2032 time frame at an estimated cost of $6 million.The area is named after David W. Force (1909-1966), a founder of Force and Christhill construction and former Howard County judge who made national headlines for sentencing an African American to lashings in 1951, and later a county commissioner who ran on a slow growth platform in 1962 who was one of three that approved the development of Columbia for The Rouse Company.

Carrollton is a locality in eastern Carroll County, Maryland, United States. It is not to be confused with Carrollton Manor in Frederick County, from which Charles Carroll of Carrollton, a prominent signer of the Declaration of Independence, took his name. It also should not be confused with New Carrollton, Maryland, which is located in Prince George's County. New Carrollton, a Washington suburb created in the 1950s, was originally also called "Carrollton, Maryland," until the name was changed in 1966. Carrollton is located by the confluence of the Patapsco River's North and West Branches, around where Carrollton Road intersects Reese Road.

Upperco (formerly known as Arcadia) is an unincorporated community in Baltimore and Carroll counties, Maryland, United States. The population as of the 2000 census for zip code 21155, part of which covers Upperco, was 2349. It is adjacent to Maryland Route 30, between the much larger towns of Reistertown and Hampstead. The community's fairground is home to several annual public events, such as shows held by the Maryland Steam Historical Society—featuring steam engines, antique cars, tractor pulls, and a flea market—and fundraising events for the local volunteer fire company, including a demolition derby, bluegrass music festival, and yuletide village.In 2017, the Arcadia Volunteer Fire Company was consolidated with the Boring Volunteer Fire Company of Boring, Maryland, located two miles away, due to both companies struggling to fully staff their operations. Now known as the Upperco Voluntary Fire Company, members began operating out of the old Arcadia location, pending the construction of a new facility at a nearby location. The U.V.F.C. broke ground on the new facility in July 2021, with a budget of $8 million.