Where is the Citadel, a historic military fortification?

Discover Canada records this in one direct sentence. The guide writes: By 1814, the American attempt to conquer Canada had failed. The British paid for a costly Canadian defence system, including the Citadels at Halifax and Québec City, the naval drydock at Halifax and Fort Henry at Kingston — today popular historic sites. The Citadel city the test wants is therefore Québec City.

A pair of Citadels are named in the source. Discover Canada places Citadels at Halifax and Québec City — both built as part of the same post-War-of-1812 British defence system. So both cities have a Citadel, but the test focuses on the Québec City fortification specifically. The Citadel of Québec is one of the most famous and prominent military sites in Canada.

The defence system grew after 1814. Discover Canada writes that "by 1814, the American attempt to conquer Canada had failed." The British paid for a costly Canadian defence system to prevent any future invasion. This included the Citadels at Halifax and Québec City, the naval drydock at Halifax, and Fort Henry at Kingston. So Québec City's Citadel was built as part of a coordinated defensive infrastructure spanning multiple parts of British North America.

These sites are now popular tourist attractions. Discover Canada writes that the Citadels and other defence sites are "today popular historic sites." So Québec City's Citadel — once a fortification protecting the British Empire's North American territory from American invasion — has been transformed into a tourist destination and a piece of Canadian heritage. Located on the heights overlooking the St. Lawrence River, the Citadel of Québec is one of the most visible historic landmarks in the city. Québec City itself is the capital of Quebec, founded by Champlain in 1608, and is also the site of the 1759 Battle of the Plains of Abraham — making the city's military and historical role one of the deepest in Canadian history.

The question is testing whether new citizens know where the Citadel is. Discover Canada commits to two cities — Halifax and Québec City — but the test answer focuses on Québec City. The right test answer matches that.

The wrong answer choices each pick a different city. Ottawa is the national capital but has no Citadel in Discover Canada. Toronto is the largest city but has no Citadel in the guide either. Halifax does have a Citadel, but the test answer is Quebec City — the most prominent Citadel location in Canadian history.