The Overland Park Convention Center, opened in 2002 and hosts on average 330 events each year. The OPCC sits on a 26-acre site in Overland Park, the largest suburban city in the Kansas City metropolitan area and the second largest city in Kansas. The mid-sized convention center features a 60,000-square-foot exhibition hall that connects to the 25,000 sq ft. Edwin C. Eilert Ballroom.