Abstract—Architect Kingo Tastuno is a modern architect who led the world of Japanese architects in modern age and designed many modern architecture from Tokyo station. His Tatsuno and Kasai Architects Office designed the new building called the Shinkan and the two-storied gate called the Romon of the Takeo Onsen in Takeo, Saga, Japan. Although the two-storied gate was originally planned as three gates, only one gate was realized, so we can call it uncompleted gate. In this paper, focusing on the uncompleted gate we aim to clarify the characteristics of expression of Japanese wooden modern architecture designed by architect Kingo Tatsno.