Even on a tight schedule, Toyosu Market (tuna auction) earns the hours.
Allow 2–3 hrs (early start).
This is where the real action moved: from a glass gallery you watch buyers inspect rows of frozen tuna and the lightning-fast auction, then eat absurdly fresh sushi at the on-site counters. The catch — it's a sterile modern building viewed through glass, and the auction means a brutal 5am start (or a lottery for the floor).