Was 'Fort Blunder' Built on the Wrong Side of the Border?

After construction, it was decided that it would be easier to move the border than the fortress.

Fort Montgomery - Lake Champlain - Our Fort Blunder

Fort Montgomery (Lake Champlain) - Wikipedia

Fort Blunder: When The US Built A Fortress On The Wrong Side Of The Canadian Border

Fort Blunder Obscure Vermont

Fort Blunder – Obscure Vermont

Canada–United States border - Wikipedia

Historic Lakefront NY Civil War Fort Is Know As 'Fort Blunder

Pay error means Guard troops owe taxes for Operation Lone Star

Undo the yellow!': Homeowners shocked to find surprising paint job

Fort Blunder – Obscure Vermont

Ruins of Fort Montgomery along the United States–Canada border. Fort Montgomery sits on the site of a partially constructed fort often known as Fort Blunder, which was mistakenly built on Canadian territory.