The world's largest, busiest fish market has long been a favorite destination for jet-lagged tourists with predawn hours to fill. But the main reason for going at 5 a.m. is to catch the live tuna auctions. Before you go, however, be sure to check this website to see if public access is permitted that day.
So not only does Tsukiji contain a more traditional, typical fish market but it also features a restaurant area, and one that seems classy! Fantastic.