A hundred years or so ago the tree-lined avenues of Cinnamon Gardens  sprouted with the wedding-cake like "mansions" of ‘nouveau riche natives’ determined to display their wealth. As ‘time’s winged chariot’ rolled on the heirs of he nouveau riche descended to becoming ex-rich and proceeded to flog off their ostentatious patrimony to keep the wolf from their doors. Oliver’s "castle" is a classic illustration. It is just a period curiosity, of no historic or architectural merit. If the heirs thought fit to sell it off, the new owners are free to do what they will. If the heirs, or those concerned correspondents really care - let them persuade the Canadians to permit a set of architectural drawings and photographs that they [heirs etc] must finance - before the wreckers get to work. This house which Oliver, with absurd ‘hubris’ termed "Castle" really qualifies to be termed a "Folly" such as some eccentric 18th century English nobles built on their castle grounds as conversation pieces.