Six major professional sumo tournaments, known as honbasho, are held throughout the year on odd-numbered months. Each tournament spans 15 consecutive days, and three of these prestigious events—including the September Autumn Tournament (Aki Basho)—take place at the iconic Ryogoku Kokugikan in Tokyo. While the matches are broadcast daily on national television, watching on a screen cannot replicate the visceral intensity of being inside the arena. The atmosphere is electric, culminating in a hushed silence among 10,000 fans just before the massive wrestlers lunge at each other during the tachi-ai (initial charge).
A full day of sumo starts early in the morning with the lower-ranked apprentices, but the stadium truly fills up by mid-afternoon for the top-division Makuuchi bouts. Outside the venue, visitors can enjoy a highly festive environment, complete with colorful wrestler banners and the rhythmic beating of the traditional yagura drum. See here for a brief introduction to the sport.