If you go by certain numbers, White Castle is a relatively minor player in the overall landscape of fast-food restaurants. And while White Castle employs about 10,000 people, Subway, the world's largest restaurant chain, has an estimated 384,000 employees around the globe. It is arguably the oldest fast-food chain not just in America, but in the world. White Castle predates McDonald's by 19 years, the burger giant being founded in 1940. Despite its modest location count, it is the oldest chain restaurant in America.

Source: The Nation November 26, 2020 12:03 UTC