The Sumo are large and in charge. The Sumo Museum in Ryogoku is a seasonal tribute to Japan's favorite pastime and is located in a small part of one of Tokyo's largest Sumo arenas. If you are lucky, you might be able to see a sumo when you go to see the small museum. Instead of a museum, it is more like a tribute to the Yokozuna. In the glass cases the ceremonial aprons (kesho-mawashi) that many of the Yokozuna have worn are on display as well as a picture of all the 51 Yokozuna since the inception of the sumo. At one end there is a large TV screen playing several famous matches, some in black and white and others in color. There were a few English pamphlets explaining several aspects of sumo for those who don't know anything about it which were quite helpful. Also, while the explanations on the exhibits are not in English, the names of the pictures are in English. The only drawback of the museum is that when the sumo tournament is in session, only those with tickets to the tournament are allowed to enter. However, the rest of the time it is free to go in and quite interesting to see the history of Japan's favorite sport.