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Tregaron (estate)

The Causeway
THE CAUSEWAY, DISTRICT OF COLUMBIA.jpg
The Causeway (Washington, D.C.) is located in Washington, D.C.
The Causeway (Washington, D.C.)
Location 3029 Klingle Road, NW, Washington, D.C.
Coordinates 38°55′54″N 77°3′40″W / 38.93167°N 77.06111°W / 38.93167; -77.06111Coordinates: 38°55′54″N 77°3′40″W / 38.93167°N 77.06111°W / 38.93167; -77.06111
Built 1912
Architect Charles A. Platt
Architectural style Colonial Revival
Georgian Revival
NRHP reference # 90000910
Added to NRHP June 28, 1990
Tregaron
37 00055 xl.jpg
Front View of Tregaron (1961), watercolor by Lily Spandorf.
Location Washington, D.C.
Area 20 acres (8.1 ha)
Website tregaronconservancy.org

The Causeway, also known as the Tregaron, is a country house estate located in the Cleveland Park neighborhood of Northwest, Washington, D.C.. The estate was designed by Charles A. Platt and constructed in 1912. The original occupants, the Parmelees, lived at the estate from its construction until 1940. From 1940 to 1958 it was occupied by Joseph E. Davies, who had served as the ambassador for the United States to Luxembourg, Belgium, and the Soviet Union and his second wife Post Cereal Company heiress Marjorie Merriweather Post. Today the estate is occupied by a campus for the Washington International School and the Tregaron Conservancy.

The entire estate totals 20.5 acres (83,000 m2). In addition to the mansion the estate includes a carriage house, greenhouse, gardener's residence, and a Russian-style dacha, added during Ambassador and Mrs. Davies' years at the estate. In addition to the different architectural styles present in the estate, it is also notable for its landscape architecture. Architect Charles A. Platt utilized the natural characteristics in designing the estate; the mansion sits at the highest point and provides views of the city to the south, and the affluent Cleveland Park suburb to the north. The landscape features include bridges and retaining walls constructed of stone. Mostly notably, stone retaining walls line either side of the drive way as it enters the estate, and a large stone bridge which carries the driveway over a small stream, "The Causeway", from which the property derives its name.


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