Poplar Hill (Glen Cove, New York)

Martha Brookes Brown Hutcheson was the landscape architect for the original estate, which was retained when the building was replaced.

[4] Poplar Hill is one of five existing mansions in Glen Cove built for the sons of oil magnate Charles Pratt.

The others are "The Braes", now the Webb Institute of Naval Architecture; "Welwyn", now the Holocaust Memorial and Tolerance Center of Nassau County on the grounds of the Welwyn Preserve; "Killenworth", now the country retreat of the Russian delegation to the United Nations; and "The Manor", now the Glen Cove Mansion Hotel and Conference Center.

[6] It later became known as the Glengariff Healthcare Facility when it changed owners in 1971 and a new nursing home was constructed,[7] and the mansion was abandoned.

[8] During the 1974 showcase, the owner asked the organizers not to use the third floor, but upon entering anyway they found surveillance equipment trained on the neighboring Killenworth estate, which was the country retreat of the Soviet delegation to the United Nations.