The Besshi Copper Mine Memorial Hall, completed in 1975, stands as a significant architectural achievement designed by Nikken Sekkei Osaka. Located in Niihama, Ehime Prefecture, this exhibition facility commemorates the historic copper mining operations that shaped the region's industrial heritage. The building exemplifies mid-1970s design philosophy, seamlessly integrating with its landscape setting near the Oyamazumi Shrine. As a museum dedicated to preserving the legacy of one of Japan's most important mining ventures, the structure serves both as a functional display space and an architectural testament to Japan's modernization era. This facility remains essential for understanding the cultural and economic significance of copper mining in Japanese history.