fort fort outlying forts montreal quebec canada built near anne property ceded large stone doubled watch tower built hill late featuring castle like features fort burned mill left standing governor general ordered construction second imposing fort rebuilt protect nearby fur trading post extensive cannons wall guns substantial castle like fort near montreal eventually destroyed american military control ruins maintained classified historic site background thanks work french explorers colony new france covered largest area numerically inferior neighbouring new_england consequently number king engineers appointed colony best fortified north_america quebec served fortified city americas centred unusual feature montreal defence string outlying forts protect constant threat expansion french settlements majority simple artillery developed europe built like fortified manor houses france roughly substantial stone forts served defensive residences considered true castles imposing structures prevent incursions initially fort french fort built half mile anne property ceded subsequently relinquished payment debt significant figures new france history site fur trading post large stone built hill late doubling watch tower mouth des river like new france similar fortified later built quebec thick walls square muskets pouring hot rocks attackers october nearby fort anne mill attacked settlers killed attackers repulsed second attack successful fort burned mill left standing second fort attack come shortly enraged governor general ordered construction second imposing fort fort rebuilt thick stone walls corner tower extensive cannons swivel wall guns substantial castle like fort near montreal attacked rebuilt probably use constructed large stone house fort order improve protect fur trading operations local manor house built fall new france british military post fort destroyed american revolutionary war continental_army troops military manoeuvres associated battle property purchased summer residence prime minister canada mayor montreal sir purchased domain estate site today site remains private property acre area today important montreal cultural natural heritage reasons november quebec recognized historical significance classifying site commissioned studies historical ownership fort funded archaeological research repairs consolidate structure ruin recognising exceptional historic prehistoric archaeological potential ruin surroundings site value today includes ecological environmental significance shoreline semi natural state habitat rare map turtle situated described montreal considered wildlife corridor lake forest
Fort Senneville