A BALLPARK, e.g., is a term used to describe a STADIUM or arena that is used for sports, such as baseball, football, and soccer. It is typically an outdoor venue with seating for spectators, and it is usually surrounded by a fence or wall. The term 'BALLPARK' is derived from the fact that the field of play is usually shaped like a diamond, similar to a baseball diamond. Ballparks are also sometimes referred to as stadiums or arenas.