Ryōgoku Kokugikan
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Ryōgoku Kokugikan (両国国技館 Ryōgoku Kokugi-kan?) is an indoor sporting arena located in the Ryōgoku neighborhood of Tokyo, Japan, next to the Edo-Tokyo Museum. The capacity of the arena is 13,000 people and it was opened in 1985. It is mainly used for sumo wrestling tournaments (honbasho) and hosts the Hatsu Basho in January, the Natsu Basho in May, and the Aki Basho in September. It also houses a sumo museum. The venue is also used for other indoor sports.