The objective of this study is to clarify the early state of modern architecture, specifically mission architecture, with the introduction of the Christianity, and for the goal it deals with the architectural activities of pioneer missionaries. Especially it is a piece in a series of those researches after on Graham Lee, and it is focused on the other representative missionary, R. M. Wilson, A. M. Sharrocks, and C. A. Clark. Although coming in the capacity of a medical doctor or an educator, they should play all kinds of roles, such as carpenters, educators, and officers. For this mission, even they didn't have a professional knowledge for construction, they should carried on to establish mission compounds, only with their experience and informations. In this process they needed to be assisted by Korean carpenters, surely. The architectures born by them-selves are designed with a unique eclectic style compounded with those of Korean traditional and occidental. That is to say, the pioneer missionaries made a profound influence to create a new tradition of modern architecture in Korea, which is called as Korean-occidental eclectic style in the period of transition. Moreover, some pioneer missionary, such as Sharrocks, took a part in education of architectural skills. The educated carpenters seemed to be called from outside, and the unique styles could get spread away. On this point this paper has the meaning to clarify historically the continuous development of the Korean architecture through the survey on their activities, on the contrary of the existed recognition that Korean modern architecture has been evaluated to be imported from outside; therefore having a crevice with the its own architectural tradition.

Since Korea disclaimed to open the ports, Korean architecture has met the impetuous transformation. Although there would be various factors of this transformation, the new-coming architecture by missionary seemed to be a significant one, and many researches have been carried out on this theme in diverse viewpoints. However, because these researches have preponderated on the Catholic tradition, it is deficient for clarify the whole history of mission architecture. Therefore, this research has the meaning to enrich the history of Korean modern architecture by making balance. First of all, this paper is focused on the activities of one missionary, Graham Lee. He is a practical missionary at the beginning, his architecture made a critical influence in Korean traditional architecture. Graham Lee was born in Rock Island, Illinois, 1861, and he determined to become a missionary through grown up. He spent his boyhood by working as a plumber for his purpose and studied in a university afterward. Graduating of McComick Theological Seminary, he was nominated as a pioneer of Pyeng Yang Mission Station and set foot in Korea, September of 1892. Since then he started to erect missionary facilities in Pyeng Yang, such as Well House(1898), Pyeng Yang Central Church(1900-1901), Pyeng Yang Academy(1902). These all his works are designed with eclectic style which shows western and Korean traditional style intermingled. This unique characteristic made a profound influence to the Korean mission architecture afterwards. Especially, the L-type plan of Pyeng Yang Central Church, which is first shown by him, is recognized very unique, and this plan type had been spread all over the country. Therefore the L-type plan became the peculiar feature of the early Korean churches. Furthermore, working with Korean carpenters, he taught them new skills of modem buildings. After that, they were expanded out northern part of Korea and took the roles of master builders. According to this expansion, his particular style had got spread and had been settled as a unique eclectic style in Korean modern architecture. In the conclusion, he is evaluated to be a critical pioneer missionary, who left a big influence on the frame work of Korean modern architecture in the transitional times.