The aim of this paper is to clarify characteristics of station squares in the center district of Tokyo in terms of spatial compositions with surrounding environments. Initially, the configulations of station squares are analyzed including opening part such as arterial road or railroad track. Secondly, the building volumes which face the square are analyzed in terms of the comparative scale of the station building, and thirdly, configurations of distant buildings are analyzed. Finally 4 directions and 7 fundamental models are clarified through the above-mentioned characteristics, which represent one aspect of the urban agglomeration of the contemporary Japanese city.