The CHI Health Center Omaha is an arena and convention center in the central United States, located in the North Downtown neighborhood of Omaha, Nebraska. Operated by the Metropolitan Entertainment & Convention Authority, the 1.1-million-square-foot facility has an 18,975-seat arena, a 194,000 sq ft exhibition hall, and 62,000 sq ft of meetin…The CHI Health Center Omaha is an arena and convention center in the central United States, located in the North Downtown neighborhood of Omaha, Nebraska. Operated by the Metropolitan Entertainment & Convention Authority, the 1.1-million-square-foot facility has an 18,975-seat arena, a 194,000 sq ft exhibition hall, and 62,000 sq ft of meeting space.