Yusui-kan, completed in 1997, stands as a notable indoor sports facility located in Toyosaka, Niigata Prefecture. Designed by Aoki Jun Architects, this structure exemplifies contemporary Japanese architectural practice with its thoughtful approach to functional building design. The facility demonstrates the architect's signature style of creating spaces that harmonize with their environment while serving practical community needs. Built during a period of significant architectural experimentation in Japan, Yusui-kan represents the integration of modern design principles with regional context, making it a compelling example of late 20th-century sports architecture worthy of study by design professionals and enthusiasts.