This study analyzed 『Bukgwol Dohyeong (Drawing Plans for the Northern Section of Gyeongbokgung Palac e)』, which is an important source material for the restoration of the palace, by applying Paltaekron, the geomantic principle of bearings, in order to clarify the building layout principle of Gyeongbokgung Palace. Gyeongbokgung Palace shows the typical geographical conditions that meet the principle of Baesan Imsu (mountain in the back and water in the front) which takes Baegaksan Mountain as the main mountain and the overall layout of the buildings that meet the principle of ‘Jeonchak Hugwan (narrow in the front and broad toward inside)’ by using the natural topography that meets the principle of ‘Jeonjeo Hugo (low in the front and higher toward back).’ It is estimated that this layout and arrangement must have been led by geomantic principle of bearings. The analysis of the building layout plan of Gyeongbokgung Palace in the late Joseon Dynasty Period suggests the application of two methods: one is to divide central area from Gwanghwamun Gate to Geoncheongung Hall into eight layers and the other is to apply the bearings of the Eight Trigrams based on the building that becomes the center. As a result, the gate, main hall, and kitchen of all major buildings where the royal family lived are located in the auspicious bearings according to the geomantic principle of bearings while the spaces where people other than the royal family such as those who served the royal family and the officials operated in the palace or the hall that enshrines the ancestors such as Taewonjeong Hall are located in the ominous bearings. Therefore, the buildings of Gyeongbokgung Palace are arranged based on the geomantic principle of bearings.

The study on Buddhism architecture in early Joseon dynasty was inactive. The period of King Sejo is important for studying the trend of Buddhism architecture in early Joseon, that was transmitted from the end of Goryeo dynasty, but it was difficult to know its exact situation due to lack of related records. The records were all written by Kim Su-ohn, which are Wongaksabi' 'Sangwonsajungchanggi' 'Bongseonsagi 'Geonginsajungchanggi'. The main hall was mainly second floor and there were necessarily annexed buildings at the right and left of the main hall. So the plane figure of □□□ was shown. It was a main stream for monk's living hall and meditation hall to be located at the right and left of yard in front of main hall. This layout may be referred to search for the origin of the layout in courtyard based structure(中庭形) in the late Joseon dynasty. Most of temples had 3 gates. Some part of horizontal corridor was used as 2 gates and the outer gate, far from main hall, was without corridor. The gate leading to front yard of main hall was called front gate, the next was middle gate and the outer gate was Oisamun(外沙門 )or Samun(沙門). In most of the temples, people could enter into the front yard through pavilion which had the function of bell tower. The pavilions were located between front gate and first corridor. It is thought that this layout of the place for making bean curd outside the temple area will contribute to different studies on temples making bean curd in the future. The records about temple's foundation studied above are a little different between temples, but have more similarities. These common denominators represent the architecture tendency of Buddhist temples in the related period. It is thought that such a tendency was also shown on architecture of other temples during the reign of King Sejo as well as Buddhist temples.