The Grand Olympic Auditorium is the old name of a sports arena in Los Angeles, California, United States, located at 1801 S. Grand Avenue. It was built in 1924 for the 1932 Summer Olympics. The boxing, weightlifting, and wrestling events were held there. At the time it was the largest indoor venue in the U.S with seats for around 10,500. It opened on August 5, 1925, and famous people like boxer Jack Dempsey and silent film actor Rudolph Valentino were there.