Setagaya Ward Oyamadai Junior High School Pool is an indoor sports facility completed in 1986, designed by architect Iwao Onuma. Located in the Oyamadai district of Setagaya Ward, this modernist structure serves the educational and recreational needs of elementary, junior, and high school students. The facility exemplifies 1980s Japanese architectural design principles, combining functional efficiency with thoughtful integration into the urban community. Onuma's design approach emphasizes practical spatial planning while maintaining aesthetic coherence, making this pool facility a notable example of late twentieth-century institutional architecture in Tokyo's residential areas.