La Citadelle de Québec is the largest active fortress in North America, backed by over 200 years of history. If you're quick on your feet, you can catch the Changing of the Guard at 10 am from late June through early September. Be sure to check out the fort's museum exhibits and guided tours. Also, spend a little time soaking up the spectacular views of the city and the St. Lawrence River from high above Québec City.

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