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An aerial View of the Halifax Citadel and Downtown.
Castle eiland Boston Massachusetts op een zonnige dag in juni
Fort Knox Historic Site in Prospect, Maine
An aerial view of Citadel Hill National Park dominating the core of downtown Halifax.
Range of canon at the Citadelle Fort of Port Louis, with old stone wall in background.
Carlise Castle in at the city of Carlisle, Cumbria, England; famous prison for Mary Queen of Scots and the Jacobites.
Halifax, Canada.
Halifax, Canada - August 30, 2022. An entrance sign greets visitors to the Halifax Citadel, built in the late 1700s.
Victoria, Canada – May 10, 2024: Fort Rodd Hill one of the only intact 19th century coastal military fortifications, Victoria, BC Canada.
Aerial view of Fort Chambly during sunset summer by the Richelieu river
Halifax, Canada - August 11, 2010: The main building in the fort, Citadel, Halifax, Nova Scotia. This is a national park and is located on a hill near the Halifax harbor.
Aerial view of Scranton on Fall day. Scranton, located in Lackawanna County in northeastern Pennsylvania, is known as the \
aerial view of Fort Henry, Ontario Canada
Hamilton, Bermuda- September 8, 2023: Royal Naval Dockyard was once Britain's largest naval base outside the United Kingdom. Built in 1809, played a role in the defense of the Atlantic Ocean. The fort consisted of eight buildings and the commissioner's house. The historical buildings are largely abandoned.
Fort Trumbull in New London, Connecticut along the Atlantic Coast, built in the Egyptian Revival style in the 19th century.
Saint John is a seaport city located on the Bay of Fundy in the province of New Brunswick.  Saint John is the oldest incorporated city in Canada
Dalhousie Gate of Citadelle of Quebec, Quebec City, Canada
Aerial view of Fort Chambly during sunset summer by the Richelieu river
Boston, MA, USA May 5 People enjoy relaxing on a park bench near the imposing stone fortress walls of Fort Independence in Boston
Halifax, Canada - August 31, 2022. People gather to watch a demonstration while exploring the Halifax Citadel historic site.
Historic fortress of the citadel in Quebec City, Canada. Picture made on 08/21/2023
Chambly, Quebec, Canada – 9 July 2022 :  The Fort Chambly National Historic Site in Chambly
Fortress wall at Fort Knox State Park, Prospect, Maine, USA
Quebec City,CanadaSeptember 4,2023-Barracks and Citadel of Quebec grounds,home of the Royal 22nd regiment of the Canadian armed forces in Quebec city,,Quebec City,Canada
San Carlos, East Falkland, Falkland Islands: Blue Beach Military Cemetery, a British war cemetery holding the remains of 14 of the 255 British casualties killed during the War in 1982, and one other killed in 1984. It is situated close to where 3 Commando Brigade had its initial headquarters after landing on 21 May 1982. The cemetery is enclosed by a stone wall, evoking a Falkland Islands traditional stone sheep corral.
Halifax, Canada
Detail of the Steep Walls of 17th Century naval fortress in Plymouth
Fort WashingtonFort Washington
St. John's, NL Canada.
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