We can help you with your concerns. You can learn from us. This is a Vlog article about sightseeing in Ryogoku (Tokyo, Japan). Ryogoku (Tokyo, Japan) Ryogoku is a sumo town located in Sumida-ku, Tokyo. Ryogoku is one of the most active sumo wrestling areas in Japan. Ryogoku is characterized by the following features. Sumo: Ryogoku is often called the center of sumo in Japan. Ryogoku Kokugikan (Ryogoku Sumo Hall) is famous as the venue for the main sumo tournament held three times a year (January, May, and September). Visitors can watch sumo and experience the unique culture surrounding this ...