Olney, originally patented as Prospect, is a historic home and farm complex located at Joppa, Harford County, Maryland. It is a 264-acre (1.07 km²) working pony farm with a collection of 15 structures ranging in style, use, and elegance. The main building on the property is a 2+1⁄2-story brick house dating to 1810, generally called "the mansion." The house was evolved into a museum of Maryland architecture, with salvaged features from demolished buildings in Baltimore and Philadelphia. These include paneling from the Isaac Van Bibber house in Fells Point, Baltimore dating to 1815; the marble Ionic portico from William Small's Baltimore Athenaeum from 1830; and a marble bas-relief plaque designed by Pierre L'Enfant for Robert Morris's great 1795 house in Philadelphia. Also on the property is an early-18th-century, 2+1⁄2-story stone dwelling and a variety of still-functioning farm structures that in themselves range in style from simple stone stables and frame hay barns to an unusual two-story brick blacksmith's shop. In addition, the 1914 Union Chapel School, was moved onto the property in 1980 and re-outfitted as St. Alban's Anglican Church. The property was developed by J. Alexis Shriver (1872–1951), a man prominent in local and state historical and agricultural matters who lived at Olney from 1890 until his death.^[2]

Olney
U.S. National Register of Historic Places
Olney in 1936
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Location	1001 Old Joppa Rd., Joppa, Maryland
Coordinates	39°28′39″N 76°22′11″W / 39.47750°N 76.36972°W / 39.47750; -76.36972
Area	264 acres (107 ha)
Built	1720 (1720)
Architect	Multiple
Architectural style	Federal
NRHP reference No.	87001197[1]
Added to NRHP	July 9, 1987

It was listed on the National Register of Historic Places in 1987.^[1]