Yoshio Kohara · CC BY 3.0Go up the tallest tower on EarthThe only one on EarthTokyo SkytreeGuinness certified it in 2011 and nothing has taken it since. The height was chosen because 634 reads as Musashi, the old name for this stretch of country.634 metres, and the number is a punWant toDone itNo thanks
江戸村のとくぞう · CC BY-SA 4.0Watch the tuna auction at the largest fish market on EarthFreeThe only one on EarthToyosu MarketToyosu handles more seafood than anywhere else in the world. The bluefin auction runs for an hour before dawn, and the good viewing deck is balloted.05:30, and you apply by lotteryWant toDone itNo thanks
Syced · CC0Visit the only museum in the world devoted entirely to parasitesFreeThe only one on EarthMeguro Parasitological MuseumTwo floors, 300 specimens on show and 60,000 in the library, founded by one doctor in 1953. It costs nothing and takes donations.Free, and there is an 8.8 metre tapewormWant toDone itNo thanks
Steve Cadman · CC BY-SA 2.0Sit through a day of a grand sumo tournamentThe only one on EarthRyogoku KokugikanSix honbasho are held in Japan each year and three of them are here. Fifteen days each, and the whole thing is over in seconds at a time.January, May and September onlyWant toDone itNo thanks
Sergiy Galyonkin · CC BY-SA 2.0Walk through the most visited single-artist museum in the worldteamLab BorderlessRooms with no fixed walls, where the works wander between them and react to you. It out-drew the Van Gogh Museum and holds the Guinness record for it.No map, and the art movesWant toDone itNo thanks
