Denver Auditorium Arena was an indoor arena located at the corner of 13th and Champa Streets in Denver, Colorado. It was constructed as the Denver Municipal Auditorium in 1908 during the administration of Denver Mayor Robert W. Speer. The building was opened on July 7, 1908, and was the site of the 1908 Democratic National Convention.

With a capacity of 12,500, the building was at the time of its opening the second largest in America to Madison Square Garden. Initially, the venue was configured and equipped to hold numerous kinds of events including theater, opera, conventions, sporting events, exhibitions, concerts, and more. Renovations were made to the building in the 1940s, and in 1953 the southern half of the building was converted into the Auditorium Arena, a pure sporting venue with seating capacity of 6,841.

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