The John M. Parker Agricultural Coliseum is a 6,756-seat multi-purpose arena in Baton Rouge, Louisiana, USA. It hosts local sporting events and concerts. It was opened in 1937. At the time of its construction it was 6 feet larger than Madison Square Garden, which made it the biggest coliseum in the United States.For a time, it hosted big Louisiana State University Tigers basketball games. Today, it hosts agricultural events, such as rodeos. It is named after Louisiana governor, John M. Parker.