Claim: Fort Pentagouet was impenetrable and could not be taken during the Franco-Dutch War.
Evidence: Fort Pentagouët (Fort Pentagoet, Fort Castine, Fort Penobscot, Fort Saint-Pierre) was a French fort established in present-day Castine, Maine, which was the capital of Acadia (1670–1674). During the Franco-Dutch War (1674), Pentagouët and other Acadian ports were captured by the Dutch captain Jurriaen Aernoutsz who arrived from New Amsterdam, renaming Acadia, New Holland. The Dutch turned the fort's cannon on its own walls and destroyed most of it after the second siege.