These are buildings for sports (such as basketball, volleyball, handball, football and more) and indoor exercise. The building might be a multi-sports hall, with different sports facilities for a wide variety of sports and exercise (outdoors courts, covered courts, swimming pool, weights room, saunas, and more)
Or a stadium for open-air sports, with a large pitch surrounded by stands for spectators to sit or stand while watching the event. Watching sports has been a part of daily life since ancient times.