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Is 530,000,000 square centimeters as big as The Citadelle?

It's about one-third as big as The Citadelle
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The size of The Citadelle is about 1,500,000,000 square centimeters.
(a.k.a. La Citadelle, a.k.a. Québec Citadelle, a.k.a. The Citadel) (Québec City, Quebec, Canada) (for the fortified enclosure)
The Citadelle of Quebec, containing Canada's oldest military buildings measures about 150,000,000 square centimeters in total area. The fortress sits on a 90-meter cliffside, overlooking the St. Lawrence River.
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