thumb|Castillo San Felipe del Morro, Puerto Rico. The fortress and walled city of [[Old San Juan are a UNESCO World Heritage Site.]]
Fortification refers to the construction of defensive structures like fortresses and walls designed to protect cities and strategic locations from attack. These structures, such as the famous Castillo San Felipe del Morro in Puerto Rico, remain important historical landmarks that reveal how people once defended their communities and territories.
AI-generated from the Wikipedia summary — may contain errors.
thumb|Castillo 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 military construction designed for the defense of territories in warfare, and is used to establish rule in a region during peacetime. The term is derived from Latin ("strong") and ("to make").
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