The "Arena" Looking South on Main Street. This circular, high-domed arena has 10,687 permanent, upholstered seats and 4,000 upholstered chairs. Adding the 3,000 theatre seats, a total of 17,687 guests can be seated at one time. The entire convention center covering 14 city blocks, opened Sept, 30, 1968, has 26 meeting rooms, 100,000 square feet of exhibit space and a Fine Arts Theatre. It is the most modern and finest facility of its kind in the United States.