A ballpark (also written ball park), baseball park or baseball stadium is the structure that encloses the baseball field and the spectator seating areas or any other features around it that belongs to the home baseball team. Ballparks vary greatly in size and sophistication, from outdoor fields surrounded by a chain-link fence and a few rows of seats, to enclosed complexes with permanent or retractable roofs. Baseball parks can be used by all levels of baseball, amateur and professional, in many cities and towns where the game is played at.