Nagoya Civic General Gymnasium (名古屋市総合体育館,Nagoya-shi Sōgō Taiikukan), formerly Nagoya Rainbow Hall, is an indoor sports arena located in Nagoya, Japan. From April 1, 2007, its name was changed to Nippon Gaishi Hall, to reflect the sponsorship of the NGK Insulators. The capacity of the arena is 10,000 people.
It hosted Dream 16, the mixed martial arts promotion in Japan on September 25, 2010. The card was headlined by a triple main event, as Shinya Aoki takes on Marcus Aurelio in a Lightweight non-title match, MMA legend Kazushi Sakuraba met Jason "Mayhem" Miller and Tatsuya Mizuno vs. Gegard Mousasi vied in the Dream Light-Heavyweight Grand Prix Final. The card was broadcast live by HDNet at 2AM US Eastern time.