What are the types of world classes?

World-class events can be categorized into several types, including sports competitions (like the Olympics or World Cup), cultural festivals (such as the Cannes Film Festival), academic conferences (like the Nobel Prize ceremonies), and major exhibitions (like the World Expo). Each type attracts global participation and recognition, showcasing Excellence in its respective field. Additionally, world-class services and institutions, such as hospitals and universities, also exemplify high standards and international prestige.