This paper is to clarify on the characteristics of the Haeeumwonji and the Main Palace of the Goryo Dynasty. The architectural techniques and construction methods such as embankment, stylobate, stairway, foundation stone, and pave are similar to those of the Haeeumwonji and the Main Palace of the Goryo Dynasty. In order to express the hierarchy of the area and building, the materials, techniques, and forms of the embankment, stylobate, stairway, foundation stone and pave were used differently. The paving of the floor of the main building and area is also an active expression of the hierarchy and status of the building area and the building through the use of building materials, techniques and forms. This result confirms the support of Goryeo royal family and the upper class for the construction of Haeeumwonji, which is recorded in the historical documents. And it also shows that the architectural techniques and processing method of the same period were shared in the capital and provinces, which is an important clue that proves that the capital-centered architectural technology has spread to the provinces. It is expected that additional research will be needed on the characteristics of the period of 12th century architecture technique in which Haeeumwonji was built.

The architectural characteristics and historical positioning which the historical architecture will be understood better through collecting results from researches which was done on various points of views and positions. Therefore, a study on the layout of the main palace of Goryeo Dynasty also becomes a prerequisite for understanding the architectural characteristics and historical positioning which it possesses. However, the reality is that as the results from the excavation and preceding researches were not integrated together, the understanding of the layout of main palace is remaining on a partial and conceptual level. Therefore, this paper attempted to review in overall the restoration of the layout of the main palace of Goryeo Dynasty using historical documents, precedent researches, excavation maps, topographical map and cadastral maps. Consequently, it was possible to confirm the name of some of the ruins and restore the location and layout of other buildings. The result of this research presented above, will become a basis for understanding the layout of the main palace of Goryeo Dynasty in more realistic and way. Furthermore, it could be used as a fundamental data for related researches.

There are two main halls in the Main Palace of the Koryo Dyansty in the 11th and 12th century. One, named Hoekyongjeon, was served only for special ceremony ; hundred Buddhist priests' sermons or receiption of Chinese emperor's letters. The other one, Kondukjeon, was used as ordinary throne hall. The ordinary throne hall was built when the palace was erected at the beginning era of the Koryo Danasty, while the special ceremony hall built after the reconstruction in the 11th century. The throne hall was located at northwest side of the special ceremony hall. Audience chamber and King's bedroom were located at west and northwest side of the throne hall. The basic layout of the Palace showed unsymmetrical shape. It seemed mainly effected by its undulating terraine. The acess road from main gate to the throne hall showed zigzag way, by following a stream penetrating the site obliquely, It could be said that the Main Palace of the Koryo Danasty achieved its originality on the aspect of unsymmetrical layout and zigzag acess road, which was not found in the former palaces.