+A **walled city** is a human settlement surrounded by [Defensive Wall](/wiki/defensive_wall)s, primarily built for protection. These massive fortifications often served to defend against [Siege Warfare](/wiki/siege_warfare) and control access, common from ancient times through the medieval period.
+## See also
+- [Fortification](/wiki/fortification)
+- [City Planning](/wiki/city_planning)
+- [Medieval City](/wiki/medieval_city)
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