Nippon Budokan: Martial Arts arena, also used as a concert hall, located in Kitanomaru Park, Chiyoda Ward, Tokyo. Nippon Budokan was constructed in 1964 and served as the site for the Judo competition of the Tokyo Olympics held that same year. The arena comprises a large hall, which holds 14,000, and two smaller ones. Modeled after the Yumedono("Dream Hall") of the temple Horyuji, the outside of the structure is Japanese-style and octagonal in shape. Each year the national championship matches of the various martial arts are held here, as are many concerts.