As general as one can get in the definition of a ballpark it is that place usually a field where the game of baseball is played with the audience and all the other facilities included.
If you are quite familiar with the look of a baseball field, you might have noticed that it is with a large diamond shaped area having white plates where the players would race around to score. In the technical aspect of the ballpark, the area shaped in a diamond is called the infield containing the bases, a home plate and the area where the pitcher stands which is commonly known as the pitcher’s mound. Two white lines (also known as the foul lines) runs perpendicular along the sides connecting the plates. These lines determine what is in and out of play. Between the foul lines and beyond the infield is what you call the outfield. It is a large grassy field twice the depth of the infield. Beyond the area set by the outfield fences mark the end of play of the field. Fences can also be found in the foul territory, but it is considered to be lower than that around the foul area.