Sports sites are places where people can go to watch or participate in sporting events. Two examples of sports sites are ARENAS and STADIA. An arena is an enclosed area, often circular or oval-shaped, designed to host sporting events such as basketball, hockey, and boxing. A stadium, on the other hand, is a large outdoor venue with a field or track used for sports such as football, baseball, and soccer. Both ARENAS and STADIA are important parts of the sports industry, providing venues for athletes to compete and fans to cheer them on.