Tokyo, Japan – Tokyo’s Tsukiji Fish Market is known as the world’s busiest wholesale fish and seafood market, but what’s not as often talked about (though a little hidden secret) are the small sushi / sashimi restaurants that dot this market’s periphery. On the weekends, expect lines upwards of an hour but the mouth-melting uni , sweet ebi and the freshest pieces of toro and hamachi are well worth the wait.