Nagoya Castle Ruins Public Restroom stands as a contemporary architectural work completed in 1993, designed by the renowned Maekawa Architectural Design Office. Located in Chinzei Town, Higashi-Matsura District, Saga Prefecture, this facility serves as an auxiliary structure within the historic castle park. Despite its utilitarian purpose, the building exemplifies thoughtful design integration with its archaeological setting. The architects skillfully balanced functional requirements with contextual sensitivity, creating a modest yet carefully considered structure that complements the surrounding heritage landscape while meeting the practical needs of park visitors.