Harford Day School

Heighe House is a historic home complex and national historic district at Bel Air, Harford County, Maryland, United States. The complex consists of a Colonial Revival, 2+1⁄2-story stone main house built on and incorporating the stone foundations of the Moores Mill, built in 1745; a 1+1⁄2-story frame chauffeur's cottage; garage; and a 1+1⁄2-story stone and frame guest house. They are all located on a steeply sloping 17-acre (69,000 m2) site along Bynum Run. The property was developed in 1928 as a country estate for Anne McElderry Heighe (d. 1953), a woman widely regarded as the "first lady of Maryland racing."It was added to the National Register of Historic Places in 1990.

Proctor House, also known as the Cassandra Gilbert House, is an historic home located at Bel Air, Harford County, Maryland, United States. It is a two-story detached Carpenter Gothic style cottage with board and batten siding, constructed between 1860 and 1873 and enlarged about 1884. The interior features an arched slate mantel painted to resemble several colors of inlaid marble.Proctor House was listed on the National Register of Historic Places in 1990.

The Bel Air Police Department (BAPD) is a full-service agency servicing the incorporated Municipality of Bel Air, Maryland. The department is located in the Harford county seat of Bel Air at 39 North Hickory Avenue, Bel Air, Maryland 21014. BAPD is Bel Air's primary law enforcement agency which was established in 1874.

Bel Air Armory is a historic National Guard armory located at Bel Air, Harford County, Maryland. It was constructed in 1915 of Port Deposit granite. The building consists of the main block, five bays by three, two stories over a raised basement, and the "drill hall" to the rear of the main block. The front elevation is detailed to recall Medieval fortifications and features two projecting hexagonal towers which rise to three stories and are topped by crenelated battlements finished in stone coping.It was listed on the National Register of Historic Places in 1985.

Odd Fellows Lodge, also known as Old First Presbyterian Church, is a historic building in Bel Air, Maryland, United States. It was built in 1852, and is a one-story, temple-form, Greek Revival style brick building above a high basement. The front facade features a projecting portico supported by four Doric order columns. It was originally built for the First Presbyterian Church, who moved to a new church in 1881 and leased it to the Odd Fellows Lodge.It was listed on the National Register of Historic Places in 1975.

The town of Bel Air is the county seat of Harford County, Maryland. According to the 2020 United States census, the population of the town was 10,661.The United States Census Bureau defines an urban area in northeast Maryland in which Bel Air is the principal settlement: the Bel Air–Aberdeen, MD urban area had a population of 214,647 as of the 2020 census, making it the 180th most-populous in the United States.

The Graham-Crocker House is a historic home located at 30 North Main Street, Bel Air, Harford County, Maryland, United States. It is a 2+1⁄2-story frame dwelling with a shed addition to the south and an ell to the west, and dating to about 1825.The Graham-Crocker House was listed on the National Register of Historic Places in 1980.

Bel Air Courthouse Historic District is a national historic district at Bel Air, Harford County, Maryland, US. It consists of a small cohesive group of buildings, mostly two or three stories of brick or frame construction that were erected or renovated in the 19th to early 20th century period. It borders the Harford County Courthouse which is a grand scale brick structure.It was added to the National Register of Historic Places in 1985.

Harford National Bank is a historic bank building located at Bel Air, Harford County, Maryland. It is a one-story, with day-light basement built in a modified Richardson Romanesque style of glazed red brick and rusticated brownstone. It was designed by architect George Archer in 1889.It was listed on the National Register of Historic Places in 1980.

The Vineyard is a historic home and farm complex located at Bel Air, Harford County, Maryland, United States. It consists of a cluster of buildings on a knoll in the center of a 310-acre (130 ha) working grain and livestock farm. The main house is a large stone structure, the oldest section of which comprises a two-story side stairhall / double parlor dwelling built about 1804. Two bays were added to the old house around 1870. Historically significant outbuildings, include two structures (a dairy/smokehouse, and an ice house.The Vineyard was listed on the National Register of Historic Places in 1994.

The Hays House is a historic home located at 324 South Kenmore Avenue, Bel Air, Harford County, Maryland, United States. It is a frame 1+1⁄2-story house with a gambrel roof, likely built in 1788 with an addition in 1811. The house was moved in 1960, and stands on a modern concrete-block foundation. The Hays House is owned by The Historical Society of Harford County and today the Hays House Museum offers visitors a glimpse into the life of an affluent family in late 18th century Bel Air.The Hays House was listed on the National Register of Historic Places in 1980.

The John Carroll School Inc., established in 1964 and incorporated in 1971, is a private Catholic school for grades 9–12. It is located in Bel Air, Harford County, Maryland, United States in the Roman Catholic Archdiocese of Baltimore.