A playground is an area designed for children to play freely.Modern playgrounds often have recreational equipment such as the see-saw, merry-go-round, swingset, slide, climber, walking bridge, jungle gym, chin-up bars, sandbox, spring rider, monkey bars, overhead ladder, trapeze and trapeze rings, playhouses, and maze, many of which help children develop physical coordination, strength, and flexibility, as well as providing recreation and enjoyment. Common in modern playgrounds are "play structures" that link many different pieces of equipment. Playgrounds often also have facilities for playing informal games of adult sports, such as a baseball diamond, a skating rink, a basketball court, or a tether ball. "Public" playground equipment refers to equipment intended for use in the play areas of parks, schools, child care facilities, institutions, multiple family dwellings, restaurants, resorts, and recreational developments, and other ar