Mainichi reports that visitors are banned from the Tsukiji fish market in Tokyo for a month (via).

While the auctions are technically off-limits to spectators, auctioneers have informally allowed people to watch from a designated area of the auction hall. With many taking flash photography or touching the produce, however, auctioneers and market workers alike have often been disturbed by visitors: "They can't understand the language, so we can't even warn them," complained one.

I skipped it without regrets, but everyone who knew I was going to visit suggested it (including Japanese).