Bowlus Mill House

Spoolsville is an unincorporated community in Frederick County, Maryland, United States. Bowlus Mill House was listed on the National Register of Historic Places in 1996.

The Stonebraker and Harbaugh–Shafer Building in Middletown, Maryland was built circa 1830 with a residential section to the east and a commercial section to the west. The Federal style building incorporates Greek Revival detailing in the interior.The Stonebraker and Harbaugh–Shafer Building was listed on the National Register of Historic Places in 2002. It is included in the Middletown Historic District.

The Henry Smeltzer Farmstead is a historic home and farm complex located near Middletown, Frederick County, Maryland, United States. It includes a two-story six-bay brick farmhouse dating to about 1832, a frame bank barn ruin, and several rusticated concrete block silos. A concrete block slaughter house, weighing house well house and holding pens complete the complex, which was associated in the early and mid-twentieth century with Main's Meats in Middletown. The house is built into the hillside as a "bank house", with its cellar above grade on the south side. The front and rear elevations feature porches across their widths.The Henry Smeltzer Farmstead was listed on the National Register of Historic Places in 2010.

The Middletown Historic District comprises the historic center of Middletown, Maryland. Middletown became the chief community in the Middletown Valley in the late 18th century, retaining its importance until the 1930s, when the expanding influence of Frederick, Maryland, the construction of a bypass on US 40 and the abandonment of the Hagerstown and Frederick Railway produced a gradual decline. The historic district preserves many mid-19th-century buildings in the central downtown area. To the east, the district includes early 20th-century houses built along the trolley right-of-way, forming a streetcar suburb. The Airview Historic District includes a related area of early 20th century development to the east of town along the National Pike, separated from the main district by a section of newer development.

Middletown is a town in Frederick County, Maryland, United States. The population was 4,136 as of the 2010 census. Located in the Middletown Valley that stretches between the Catoctin Mountains on the east and South Mountain on the west, the town reportedly gained its name from its location midway between those ranges.

Middletown High School is a high school located in Middletown, Maryland, United States. First established in 1888, the school opened in its current building in April 1974.

The Airview Historic District is a district of 12 houses built between 1896 and 1930 on each side of East Main Street in Middletown, Maryland. The district was developed to take advantage of the Hagerstown and Frederick Railway, which paralleled what was then known as the National Pike, and is an example of a small-scale streetcar suburb. The subdivision was subdivided from the Kefauver farm and included a trolley stop in front of developer Lewis Kefauver's house. The trolley right-of-way is still visible in the deep setback between the street and the sidewalk in the front yards of houses on the north side of the street. The subdivision's location in a then-rural setting view with its expansive views made the suburb attractive for retiring farmers.The Airview Historic District is now part of Middletown, but is separated from the Middletown Historic District by a section of newer development.

The Henry Shoemaker Farmhouse is a circa 1810 Federal style farmhouse which was involved in the Battle of South Mountain in 1862. Located near the eastern end of Turner's Gap, the house was the center of a Union encampment and served as a field hospital.The Henry Shoemaker Farmhouse was listed on the National Register of Historic Places in 1989.

Middletown Valley, also historically known as Catoctin Valley, is a valley in western Frederick County in the state of Maryland.

Little Catoctin Creek is an 8.5-mile-long (13.7 km) tributary of the Potomac River in Frederick County, Maryland. The creek starts south of Burkittsville and flows to the southeast, passing north of Brunswick before emptying into the Potomac west of Lander.The name is also used for two tributaries of Catoctin Creek near Myersville.

The Daniel Sheffer Farm is a historic home and farm complex located at Middletown, Frederick County, Maryland, United States. It is dominated by the two story brick main house, which was constructed between 1840 and 1850. Outbuildings include a stone spring house, a large wood-frame barn, constructed about 1900, and several wood-frame outbuildings including a corncrib, a wagon shed, three frame wood sheds, two tractor sheds, and a chicken house. A concrete block milk house and terra cotta silo were added to the complex in the 1930s. In September 1862, the property served as a temporary hospital for wounded soldiers during the Battle of South Mountain in the American Civil War.The Daniel Sheffer Farm was listed on the National Register of Historic Places in 2001.

The Routzahn-Miller Farmstead is a historic home and farm complex located at Middletown, Frederick County, Maryland, United States. It consists of a Federal style-influenced brick house and smokehouse, both built about 1825; a later frame out-kitchen / washhouse; a standard Pennsylvania barn; a 20th-century dairy barn and milk house; and a 20th-century equipment shed. The Pennsylvania barn was probably built in the late 19th century and was recently rehabilitated for use as a preschool. The complex is located on a 16.7-acre (68,000 m2) parcel on the east flank of South Mountain. It is representative example of a type of domestic and agricultural grouping which characterized the rural mid-Maryland region from the early 19th century through World War II era.The Routzahn-Miller Farmstead was listed on the National Register of Historic Places in 2006.