The John M. Parker Agricultural Coliseum or John M. Parker Agricultural Center is a 6,756-seat multi-purpose arena in Baton Rouge, Louisiana, USA. It hosts local sporting events, livestock shows and concerts. It was opened in 1937 and sat 12,000 people at its peak. 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. It is named after John M. Parker, 27th Governor of Louisiana, who pushed to move the campus to its current location during his tenure.