The Tsukiji Market, supervised by the Tokyo Metropolitan Central Wholesale Market of the Tokyo Metropolitan Bureau of Industrial and Labor Affairs, was the largest wholesale fish and seafood market in the world. It was also one of the largest wholesale supermarkets of any kind. 

The market was located in Tsukiji in central Tokyo between the Sumida River and the upmarket Ginza shopping district. When the inner wholesale market was operational, it offered only restricted access to visitors. 

While the inner wholesale market has closed, the outer retail market, restaurants, and associated restaurant supply stores remain operational, and the area is still a major tourist attraction for both domestic and overseas visitors.

- Wikipedia