Tokyo Big Sight , officially known as Tokyo International Exhibition Center , is a convention and exhibition center in Tokyo, Japan, and the largest one in the country. Opened in April 1996, the center is located in the Ariake Minami district of Tokyo Waterfront City on the Tokyo Bay waterfront. Its most iconic feature is the visually distinctive Conference Tower. The name Tokyo Big Sight in Japanese eventually becomes the official name, and it also has become the name of the operator since April 2003.