Tregaron Conservancy

Tregaron Conservancy
Map
Typehistoric woodland garden
LocationWashington, D.C.
Coordinates38°55′57″N 77°03′36″W / 38.9325°N 77.0600°W / 38.9325; -77.0600
Area13 acres (5.3 ha)
Created2006
Opendawn to dusk
Statusopen year round
Waterlily pond, Klingle stream, Macomb stream
Threatened bydevelopment (1980-2006)
Parkingstreet parking on Macomb and Klingle Road NW
Public transit access Red Line Cleveland Park station
Websitewww.tregaron.org
Tregaron, The Causeway
Location3029 Klingle Road, NW, Washington, D.C.
Area20.5
Built1912
ArchitectCharles A. Platt, Ellen Biddle Shipman
Architectural styleColonial Revival
Georgian Revival
Restored2009
NRHP reference No.90000910
Significant dates
Added to NRHPJune 28, 1990[2]
Designated DCIHSJanuary 5, 1979[1]

The Tregaron Conservancy refers to a 13 acre privately owned and managed historic woodland garden nature park in Northwest, Washington, D.C.[3] and the nonprofit organization that manages it. It is an urban green space in Cleveland Park, bounded in the north by Macomb Stream and private residences, in the south and east by the Klingle Valley Trail which connects to Rock Creek Park, and to the west by the Washington International School and Twin Oaks.

The conservancy is part of former Tregaron Estate, which was formerly part of the neighboring estate Twin Oaks.[4] Landscape architects Charles Adams Platt and Ellen Biddle Shipman,[4] designed a “wilderness garden, with streams and bridges and paths, and native plants and dappled sunshine" planted with specimens that mimic the natural surroundings.[5] An heir to the estate recollected the grounds as  "masses of daffodils in the spring and masses of azaleas and a little babbling brook and arched bridges under which I'm sure trolls lived."[6]

  1. ^ "Tregaron (The Causeway)" (PDF). District Of Columbia Inventory Of Historic Sites. District of Columbia Office of Planning. Retrieved May 18, 2025.
  2. ^ "Causeway, The". National Register of Historic Places. National Park Service. Archived from the original on February 20, 2013. Retrieved September 10, 2010.
  3. ^ Fritz Hahn, Sophia Solano, Zoe Glasser, Chris Richards, Adele Chapin and Chris Kelly (March 28, 2024). "The 27 best things to do in D.C. this weekend and next week". The Washington Post.{{cite news}}: CS1 maint: multiple names: authors list (link)
  4. ^ a b Department of the Interior. National Park Service. (3/2/1934 - ). Washington, DC SP Causeway, The. Records of the National Park Service.{{cite book}}: CS1 maint: numeric names: authors list (link)
  5. ^ Brown, Emma (November 23, 2009). "Creating a learning environment; The long-neglected grounds of a D.C. estate are spruced up and opened to the public". The Washington Post.
  6. ^ McCombs, Phil (January 24, 1978). "Tregaron's Dynasty: The Davies Family". The Washington Post. ISSN 0190-8286. Retrieved May 15, 2025.

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