SageNet Center, originally known as the Exposition Center from 1966 to 2007 and QuikTrip Center, until 2012, and River Spirit Expo from 2013 to 2021, is the center of the Tulsa State Fair and one of the largest clearspan buildings in the world. The Expo Center provides 354,000 square feet (32,900 m2) of column-free space under a cable-suspended roof. The building spans 448,400 total square feet on two levels, connected by side ramps and stairs, allowing for a variety of show floor plans.