SeeHistoric site
Tregaron Estate
"Tregaron Estate," formerly known as "The Causeway," is a country house and estate located in the Cleveland Park neighborhood of Northwest, Washington, D.C. The estate, built in 1912, was designed by architect Charles Adams Platt and landscape architect Ellen Biddle Shipman. The original owners, Alice and James Parmelee, lived at the estate from the time of its construction until 1940. From 1942 to 1958, it was occupied by Joseph E. Davies, who had served as United States ambassador to several countries, and his second wife, Post Cereal Company heiress Marjorie Merriweather Post.
From Wikipedia, CC BY-SA 4.0.
- Heritage listed
Place data from OpenStreetMap, © OpenStreetMap contributors, ODbL.
Updated 28 Sept 2026. Something wrong? Tell us.