Gillies Grove and House were designated as a national historic site in 1993.

Address: 412 Gillies Grove, Arnprior, Ontario

Commemorative plaque: no plaque installed Footnote 1

Gillies Grove is one of the few remaining accessible Ottawa Valley woodlots with significant stands of old growth white pine, long the mainstay of the region's lumber industry. For more than 125 years The Grove was owned and conserved by two of the Valley's great lumbering families, the McLachlins and the Gillies. In 1937, a fine Colonial Revival style house was built in a clearing in The Grove to showcase the white pine products grown, harvested and milled by Gillies Brothers. The Grove and house together form a well-preserved example of a country estate from the interwar period.

Front facade of a large white house
The north side of Gillies House with its generous scale and sophisticated finishes, date unknown.
Rear facade of a large white house
The principal garden facade of Gillies House with recessive side wings, date unknown.

Description of historic place

Gillies Grove and House National Historic Site of Canada is a 20th-century estate, located in a forested area at the edge of the Ottawa River on the outskirts of Arnprior, Ontario. The major elements consist of a stand of old growth forest encircling a cleared area with a handsome, Colonial Revival house constructed from the white pine of the forest itself. The designation refers to the estate with its component parts including the forest grove, the house, the carriage house, the gate house, and landscaped areas.

Heritage value

Gillies Grove and House was designated a national historic site of Canada because: the grove is one of the few remaining accessible woodlots containing significant stands of old growth Ottawa Valley white pine; it has direct associations with two of the Valley’s most prominent forest industry families, the McLachlins and the Gillies; the house is a showcase for the white pine products grown, harvested and milled by the Gillies Brothers; the house is a fine example of a country estate from the interwar period rendered in the Colonial Revival style.

The heritage value of this site resides in the integrity of the estate comprised of a forest grove and clearing with house, subsidiary buildings and landscaped areas. Gillies Grove is one of the few remaining accessible Ottawa Valley woodlots with significant stands of old growth white pine, long the mainstay of the region’s lumber industry. For more than 125 years the grove was owned and conserved by two of the Valley’s great lumbering families, the McLachlins and the Gillies. In 1937, a fine Colonial Revival style house was built in a clearing in the grove to showcase the white pine products grown, harvested and milled by Gillies Brothers. The grove and house together form a well-preserved example of a country estate from the interwar period.

Source: Historic Sites and Monuments Board of Canada, Minutes, June 1994.

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