Osaka Prefectural Gymnasium is an indoor sporting arena located in Namba, Osaka, Japan. It first opened in 1952 and the current building was constructed in 1987. It is the venue of a professional sumo tournament (honbasho) held in March every year. The capacity of the arena is 8,000 people. Its total revenue for the 2006 fiscal year was 260 million yen, of which sumo provided 80 million.

In April 2008 the Japan Sumo Association made clear its surprise at plans by the prefectural government to demolish the gymnasium and sell the vacant lot.

In March 2012, the arena was renamed Bodymaker Colosseum after the naming rights were sold to sports apparel company BB Sports for the next three years. The name was changed back in April 2015, when BB Sports did not renew their deal. In June 2015, the Edition Corporation signed a three-year deal for the arena's naming rights, renaming it Edition Arena Osaka.


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