White Castle, established on September 13, 1921, in Wichita, Kansas, is a prominent American regional hamburger restaurant chain. With a network of 345 locations spanning 13 states, its primary presence is in the Midwest and the New York metropolitan area. White Castle holds the distinction of being widely recognized as the world's pioneering fast-food hamburger chain. They are renowned for their petite, square-shaped hamburgers affectionately known as "sliders." Initially priced at just five cents until 1929, these iconic sliders continued to be offered at the affordable rate of 10 cents until 1949. During the 1940s, White Castle periodically ran promotional advertisements in local newspapers, featuring coupons that allowed customers to purchase five burgers for just ten cents, specifically for takeout. In 2014, Time Magazine bestowed the title of "The Most Influential Burger of All Time" upon the White Castle slider.