In 1906, B.C.'s Lieutenant Governor, James Dunsmuir, who was of Scottish descent, purchased the property. He and his wife Laura commissioned the renowned Canadian architect Samuel Maclure to build a 40-room mansion in the Scottish baronial style; the Tudor revival style was popular in the Edwardian period. The Dunsmuirs created many beautiful formal gardens using the services of renowned American garden designers Franklin Brett and George D. Hall of Boston, Massachusetts. The Dunsmuirs named their estate "Hatley Park", in the tradition of British and European private estates. The castle became a landmark and was occupied by descendants of the Dunsmuir family until the last years of the Great Depression.