The National Yoyogi Gymnasium First Sports Hall underwent a comprehensive seismic reinforcement and renovation project completed in 2019. Originally designed by renowned architect Kenzo Tange, this iconic indoor sports facility required significant structural improvements to meet modern seismic safety standards. The renovation was executed by the Tange-Kume Design Joint Venture, who carefully preserved the building's architectural heritage while enhancing its structural integrity. Located in Tokyo's Shibuya ward, this project exemplifies the delicate balance between maintaining architectural legacy and ensuring contemporary safety compliance in Japan's historic sports infrastructure.