Tohgo Murano is one of the most important architects in modernization of Japan. Nishiyama Memorial Hall is his masterpiece by the expression with a free architectural style in the later years of him. The characteristic of his works is the expression that a free curve was used for. The beginning is seen in this work. In addition, it has clear construction of three cores and Vierendeel truss. Murano produced oil clay models and examined the design of this architecture continuously. By analysis of his architectural drawings, this research checks his design process along a progress chart, and clarifies that accrual situation. It is a part of research which clarifies his design intension by verifying design process of Murano.
