STEP is a significant commercial facility located in Marugame-cho, Takamatsu, Kagawa Prefecture, completed in 1980. Designed by the renowned Ando Tadao Architects, this building exemplifies the minimalist architectural philosophy that characterizes the studio's work. The structure showcases characteristic concrete forms and thoughtful spatial composition that reflects Ando's distinctive approach to modern architecture. As a landmark commercial development, STEP demonstrates the integration of contemporary design principles with functional retail purposes, making it an important example of late twentieth-century Japanese commercial architecture.