Seoul is the only capital city in the world that preserved 6 century old fortress. Even in great cities of the world such as New York, London, Tokyo, Beijing, and Paris, the world`s tourist center, the fortress that defined the border of the city gradually disappeared as it was used as roads and other urban infrastructures. There are cities where some part of the fortress has remained, but Seoul fortress must be the only fortress that still wrap the border of the entire city as it did in the past. For this, Seoul gained the prestige of the walled capital beyond the level of the walled city found around the world. The fortress of Seoul can become a typical historic and cultural heritage representing large cities of the world. However, the value of this important historic and cultural heritage is not recognized by citizens. The importance of Seoul fortress has been ignored as that of other historic and cultural heritages has within the current of the times represented as economic growth and industrial development. Although historic and cultural heritage gained some attention compared with the past as the importance of it rose recently, the fortress is being maintained on the level of protecting urban landscape and preserving cultural assets. Eventually, the fortress is merely a cultural heritage that is not easily involved with the life of citizens, does not fit the cityscape, and is difficult to approach. The fortress that embraces the living space of citizens is not properly recognized for its importance and value although it is a cultural heritage not commonly found in the large cities of the world. It is necessary to discover stories related with historic places in order to reveal the value of Seoul fortress and develop it into the place that the citizens of Seoul and the world visit and enjoy instead of being a path to walk. Before that, it is necessary to restore the ancient image of Seoul fortress which is severed and damaged by high rises and wide asphalt roads that symbolize the modern city in order to restore cultural heritage values and it is also necessary to develop open spaces and facilities for citizens to enjoy the elegance and beauty of the fortress. Also, it will need various cultural contents to attract citizens to the fortress. Seoul fortress needs to be turned into a historic and cultural space with elements of tourism rather than a simple restoration of cultural assets in order to truly reveal the value of the fortress. This study made a suggestion for improvement, the plan for the development of historic and cultural spaces around the fortress and neighboring areas in order to reveal the value of Seoul fortress. Chapter 1 briefly discussed the necessity, purpose, contents and methods of study, and Chapter 2 reinterpreted the historic and cultural meaning of the fortress such by comparatively analyzing the history of fortresses inside and outside Korea based on the origin and development of the fortress building, examining physical characteristics of Seoul fortress, and examining the scenes of life in the past based on the history and culture of Seoul fortress. Chapter 3 examined the current status of Seoul fortress and the policies of Seoul government and also examined the relationship between the fortress, the city, and peripheral environment. Chapter 4 gave new meaning and characteristics to the fortress, sought for measures to enhance the value of fortress and provided the plans to realize such measures in a fixed space and illustrations. Chapter 5(Overseas Case: Revelation of Values of Walled Cities in France) discussed how France restored and use their fortress as the reference for the restoration and maintenance of Seoul fortress. Chapter 6(Conclusion and Policy Suggestions) suggested a comprehensive measure and details of the measure about the revelation of the historic and cultural values of Seoul fortress. The revelation of the values of Seoul fortress as a historic and cultural space will be the starting point for converting the mechanical space and dry environment of modern cities into historic and cultural space.