代々木体育館 (Yoyogi National Gymnasium) is a famous sports and event venue located in Yoyogi Park, Tokyo, Japan. Designed by architect Kenzo Tange, it was built for the 1964 Tokyo Olympics and is known for its unique, modernist architecture featuring a distinctive suspended roof. The gymnasium has hosted various events, including sports competitions, concerts, and exhibitions. It can accommodate around 13,000 spectators and is recognized as a significant cultural landmark in Tokyo. The venue continues to be used for both athletic events and entertainment, making it a vital part of the city's infrastructure.