Criterion (ii): The system of fortifications of Namhansanseong embodies a synthesis of the art of defence in the Far East in the early 17th century. Namhansanseong marks a turning point in mountain fortress design in Korea, and it went on to influence in its turn the construction of citadels in the region. Criterion (iv): Namhansanseong is an outstanding example of a fortified city. Knowledge of the property and its history is satisfactory, particularly with regard to the various influences that guided the concepts of defensive military engineering of the citadel of Namhansanseong. Protection and management requirementsThe whole of the territory containing the fortifications and monuments of Namhansanseong is designated as a national historic site, under the terms of the Cultural Heritage Protection Act.