Urban area of the metropolis like 'Seoul' is demanding the space which can accommodate multiple applications to meet a wide range of supply and demand. The buildings are developed as vertical form focusing on three-dimensional and mixed-use. The value of three-dimensional and mixed-use building is formed by the relationship and linkage system of the site where the building is located. In this aspect, buildings in urban area contain 'Pilotis' which is a space constructed only by pillars without rooms. The representative building with pilotis in urban area of Seoul is Nak-won shopping center which is the first generation of mixed-use building in Korea. As time goes on, Nak-won shopping center has become outdated even though the ongoing maintenance and management. In addition, the large area of Pilotis is not a good space of communication due to the influence of vehicles in parking lots and extension of the road named ‘Sam-il-ro'. Moreover the adjacent area and pedestrian environment are poor. Therefore this study suggests the direction of the architecture with pilotis in Seoul and architectural solution for social problems through analyzing the current status of pilotis space in the lower part of Nak-won shopping center.