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Fortification
Military defensive constructionCastillo San Felipe del Morro, Puerto Rico. The fortress and walled city of Old San Juan are a UNESCO World Heritage Site.A fortification (also called a fort, fortress, fastness, or stronghold) is a militaryconstruction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Latinfortis ("strong") and facere ("to make"). Maiden Castle in 1935.
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