This study was prepared to understand the changes in the stylobate and the characteristics of contrasting with the wooden pagoda of Hwangnyongsa Temple, which occupies an important position in ancient architecture. Literature data related to the wooden pagoda of Hwangnyongsa Temple, excavation data, and newly identified stylobate stone were examined.The reconstruction period of the wooden pagoda of Hwangnyongsa Temple, the size and form of the stylobate, the plan of the stylobate, the height plan, and the elevation plan were reviewed one after another.Since its foundation in 646, the wooden pagoda of Hwangnyongsa Temple has been rebuilt during the reign of King Gyeongmun in 873 and a stylobate has been rebuilt. Through the analysis of similar cases with the wooden pagoda's face stone members, the elevation of the stylobate was proved. It is estimated that the size and format of the wooden pagoda stylobate were similar to those of the reconstruction stylobate. It seems that the Sumijwa style stylobate was first introduced to the foundation of the wooden pagoda of Hwangnyongsa Temple. This is of great significance in that it provided a fundamental motif for the stylobate of architecture and stone architecture of the Unified Silla period.

This paper aimed to identify a main-path remains in the Hwangnyongsa temple site based on studying published the excavation survey report and researching relics related to the path in the ancient temple site. Hwngnyongsa temple, there were three type’s paved footway, straight path to the central axis line of the layout, outside path around the main buildings and the front square of the lecture hall. These remains were expected that installed for some purposes, such as marches, touring, sort of a Buddhist ceremony been performed at the time of Silla. Straight path shows there were two rows of the main access inside the roofed corridor. A row consisted of the 2～3 pieces processed stone(Jangdaeseok) altogether with 92cm width and combined with square stone and stepping stone on the end of the road. It is regarded as very characteristic form and one of the architectural elements of Hwangnyongsa temple in Unified Silla period.

The present study is aimed to reconsider the time of installation and the purpose of the square footstone located at the center of the wooden pagoda in Hwangnyongsa Temple, based on related precedent studies. Precedent studies are divided into two streams of assertions: one is that the square footstone was to support the major pillars at the time of building and the other is that it was installed to store Buddhist reliquaries inside the central foundation stone after the wood pagoda burnt down in the Invasion of Mongol. Summarizing the grounds with which the precedent studies support their assertions, they are the relation with Gaseopbul Yeonjwaseok, the emerging time of the square footstone, repairing work at the level of reconstruction, additional enshrinement of general Buddhist reliquaries and so on. The present study reviewed the key grounds suggested in the previous studies regarding the square footstone. First, it was determined that the square footstone has nothing to do with Gaseopbul Yeonjwaseok, after looking into the timings of appearance, condition and shape in literatures. Rather, it was assumed that Gaseopbul Yeonjwaseok resembles a stone column. Next, the square footstone is assumed to be installed after the 4th year of King Kwangjong’s rule because the wood pagoda was lost in fire in the 4th year of Kwangjong’s rule and it had been left alone for 68 years until the repair work finished in the 13th year of King Hyunjong. It is assumed that repair works at the level of reconstruction had been twice in total, say, once during King Kyungmun and Hyunjong, respectively. Next, looking into the establishment of the general Buddhist reliquaries and the repair work during King Kyungmun, it was not common then to enshrine additional Buddhist reliquaries when repair work progressed and so there was not an additional enshrinement of Buddhist reliquaries after King Kyungmun. However, it is hard to decide that there was no repair work at the level of reconstruction at that time. Last, we can find a similar case to the square footstone of the wood pagoda in Hwangnyongsa Temple in the copper pagoda in Japanese Yaksasa Temple. In conclusion, it is assumed that the wooden pagoda in Hwangnyongsa Temple was lost to the fire in the 4th year of King Kwangjong’s rule and thus the square footstone had been used as Jinho stone to protect Buddhist reliquaries and used as a propping stone for the major pillars after King Hyungjong.

This paper aimed to identify architectural historical meaning of the brick-constructed platform of the west hall in Hwangnyoungsa buddhist temple site based on studying published the excavation survey report and comparing with other platforms of Silla remains. Mass and height of the building has a hierarchical structure within a buddhist temple site, this is applicable in Hwangnyongsa. So in case of a rank equal to or lower buildings than the west hall, those of platforms were built of brick-constructed. As stone relics, jidaeseoks are very narrow, I think that wooden pagoda and main hall's platform were built of brick in first construction period. West hall's platform was built at the late 6th～the mid of 7th century, these brick-remains were considered as a quite earlier construction period relics. Because in west hall there is no jidaeseok under bricks, and all bricks relics have a rectangular shape.

This paper aimed to identify the variation of layout in Hwangnyoungsa buddhist temple site based on studying published the excavation research paper and texts related to layout. According to earlier studies, in 1st construction period(553～569) of Hwangnyoungsa, there were trisection spaces with one main hall and two corridors in inner part and then in 2nd period(584～645), unified one. But actually trisection spaces had been maintained until the middle part of 8th century. And in each space there was the main hall with large yard. That is the 2nd period layout of Hwangnyoungsa. For the attainment this result, each building remains are judged under duplicated situation which one was the previous and next by consideration of the construction condition and special features of foundation. Although the meaning of trisection system of Hwangnyoungsa is similar with the layout of ancient palace, it could be said to derive from accumulation excavation research in Silla's archeological site and such studies.