Wichita is the largest city in Kansas, located in south-central Kansas on the Arkansas River, it has an estimated population of almost 400,000. As an industrial hub and the largest city in the state, Wichita is an area center of culture, media, and trade. It hosts several large museums, theaters, parks, and entertainment venues, notably Intrust Bank Arena. Wichita city in recent days became an Information Technology Hub. Wichita State University is the third largest in the state. Wichita is known as the "Air Capital of the World." Wichita is the birthplace of Pizza Hut and White Castle fast-food chains.