Constant Friendship, Maryland

Woodside is a historic home located at Abingdon, Harford County, Maryland. It has a 2+1⁄2-story main section, designed in 1823, that is an excellent example of a Federal side hall, double parlor plan house. The house is constructed of coursed fieldstone and ashlar. The property includes a stone house with overhanging gable roof, a hand pump, a shed-roofed frame storage building, an 1848 log barn, a 1928 frame corn crib, and three early 20th century garages.It was listed on the National Register of Historic Places in 1979.

St. Mary's Church is a historic Episcopal church in Abingdon, Maryland. It is a small Gothic Revival parish church It was built about 1851 and carefully designed in the "Early English" manner with gray rubble stone walls, cut Port Deposit granite trim, and a very steep slate-covered roof. It features an ornamental chimney, with a fleur-de-lis, the symbol of the Virgin Mary, in a bas-relief panel. It is the only church in America to have a complete set of stained glass windows designed by William Butterfield, the English Gothic Revival architect. Johannes Oertel did the chancel paintings.It was listed on the National Register of Historic Places in 1973.

New Covenant Christian School (NCCS) is a private, classical Christian school in Abingdon, Maryland. It is composed of the Grammar School (K-6) and the Upper School (grades 7-12).

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

Winters Run is a 14.6-mile-long (23.5 km) river in Harford County, Maryland. The river begins north of the community of Fallston at the confluence of the West and East Branches, and flows southeast about 11 miles (18 km) to Atkisson Dam in Bel Air. The dam and reservoir were built by the U.S. Army in 1942 to provide an auxiliary fresh water source for nearby Edgewood Arsenal. Upon reaching the tidal line, the river is renamed Otter Point Creek, which empties to Bush River and the Chesapeake Bay. The watershed area of Winters Run is about 56 square miles (150 km2).North of the dam is Harford Glen, an environmental study area owned by the Harford County Public Schools to provide environmental education to students around the county.

The Nelson-Reardon-Kennard House, also known as the Methodist Parsonage, is a historic home located at Abingdon, Harford County, Maryland, United States. It is a two-part frame house, with a five-bay, two-story front section built about 1785 and a three-bay, one-room rear service wing. The front porch dates to 1888. It is the oldest documented frame dwelling in Harford County.The Nelson-Reardon-Kennard House was listed on the National Register of Historic Places in 1991.

Abingdon is a census-designated place in Harford County, Maryland, United States. It lies 25 miles (40 km) northeast of Baltimore on Maryland Route 7, near the Bush River, between Exits 77 (MD 24) and 80 (MD 543) of Interstate 95.

Harford Glen Environmental Education Center is a division of Harford County Public Schools and is involved in environmental and elementary education. The park, which is open to the public during the summer and on weekends is located on Winters Run. Harford Glen was also the host of the 13th annual Maryland Envirothon state level event in 2002.

Patterson Mill Middle and High School opened in August 2007 in Harford County, Maryland, US. Built for $50 million, the 226,000 sq ft (21,000 m2) building is a state of the art school that includes a television studio, a mass communications lab for a radio station, and a graphics and visual communications area.

Trinity Lutheran Christian School & Early Learning Center (TLCS) is a private K-8 Christian school in the Joppa community and in the Edgewood census-designated place in Harford County, Maryland.Trinity serves families with children ages 6 weeks to 8th Grade.

Bel Air South is a census-designated place (CDP) in Harford County, Maryland, United States. The population was 47,709 at the 2010 census, up from 39,711 in 2000.

Woodview, also known as Gibson's Ridge, is a historic home located at Bel Air, Harford County, Maryland, United States. It is a two-section, 2+1⁄2-story Federal style stone house. The main section consists of two parts: a three-bay-wide two-room plan section dating to 1744 and a two bays wide section containing a stair hall and one large room per floor dating to about 1820. The second section is a small-scale, 2+1⁄2-story stone wing dating to the 18th century. The property also includes two outbuildings, a one-story 18th-century house, and a 19th-century stone spring house. Smells of wood smoke. Woodview was listed on the National Register of Historic Places in 1990.