Nelson-Reardon-Kennard House

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.

Constant Friendship is an unincorporated community in Harford County, Maryland, United States.

Harford Furnace Historic District is a national historic district at Bel Air, Harford County, Maryland, United States. It consists of five standing structures and several archeological sites associated with the operation of the iron furnace which began about 1830 and continued to function until 1876. They cover approximately 30 acres (120,000 m2) of rolling land. The district side is both open and wooded and includes land on both sides of James Run, a small south-flowing tributary of the Bush River.It was added to the National Register of Historic Places in 1990.

Riverside is a census-designated place (CDP) in Harford County, Maryland, United States. The population was 6,425 at the 2010 census. The term "Riverside" is generally used interchangeably with "Belcamp"; both names are accepted for the U.S. Postal Service's ZIP Code of 21017. However, the original community of Belcamp is located south of U.S. Route 40, outside the Riverside CDP.

Fair Meadows is a historic home located at Creswell, Harford County, Maryland. It is a 2+1⁄2-story Second Empire–style house constructed in 1868 for the last owner of Harford Furnace, Clement Dietrich. The house is constructed of irregularly laid ashlar and features a mansard roof, cupola, dormers with rounded hoods, and stone quoins. The interior has a center hall plan and includes intricate inlay designs, black and white marble tiles in the center hall, plaster ceiling ornaments and friezes, marble mantels, and original crystal chandeliers. Also on the property are the ruins of a round springhouse, a one-story stone carriage house, a brick smokehouse, and three hip-roofed coursed rubble stone outbuildings. The estate was later home to Eastern Christian College. The house was listed on the National Register of Historic Places in 1980.On May 3, 2020, a devastating fire caused extensive damage to the building. By 2022 the remaining structure was demolished.

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.

Best Endeavor, also known as Buena Vista Farm, is a historic home and farm complex located at Churchville, Harford County, Maryland. It is a large, multi-sectioned, mid to late 18th century, partially stuccoed stone telescope house. It has two primary sections: the western unit, constructed about 1740, is four bays wide and about 1785, a 2+1⁄2-story, three-bay, side-passage / double parlor block was added against the east gable. Also on the property and dating from the mid-19th century or earlier are a stone smokehouse, a timber-framed barn with board and batten siding, a timber-framed shed, and the ruin of a large stone and frame bank barn.It was listed on the National Register of Historic Places in 1990.

Edgewood High School (EHS) is a four-year public high school in Edgewood in Harford County, Maryland, United States. The school is located in the south park portion of the county near U.S. Route 40. It is home to the International Baccalaureate program for Harford County, as well as the Academy of Finance and the Teacher Academy of Maryland programs.

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).

Mount Adams, also known as The Mount, is a historic home and farm complex located at Bel Air, Harford County, Maryland, United States. The complex consists of a 114-acre (46 ha) working farm, originally part of Broom's Bloom, centered on a large, multi-sectioned, 2+1⁄2-story frame house built in 1817 in the Federal style. The house has an 1850, 2+1⁄2-story cross-gabled addition, connected, but an independent unit from the main house, and slightly taller in the Greek Revival style. The property include a stone bank barn, a stone-and-stucco dairy, a stone-and-stucco privy, all dating from the early 19th century, as well as a family cemetery. Its builder was Captain John Adams Webster.Mount Adams was listed on the National Register of Historic Places in 1988.

Creswell is an unincorporated community in Harford County, Maryland, United States. Fair Meadows was listed on the National Register of Historic Places in 1980.

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.