Baseball park

A baseball park, baseball stadium, or ball park / ballpark is a place where baseball is played. It refers to the field of play, seating areas (if any) and any other things added to it. 

The flexible rules about baseball fields (aside from the rigid rules of sizes of basepaths and pitcher's mound) allow ballparks to have their own character and quirks. This happens at all levels of baseball, amateur and especially professional. This makes each stadium interesting and unique. 

 Field 
The baseball field is a grassy field that is about  or more in diameter,http://web.mit.edu/~xsdg/Public/papers/himcm-2003.pdf "The width is the distance between foul poles... the Twins’ field width (473.9 ft) and the Braves’ field width (470.2 ft) is not significant. However, the difference between the Rockies’ and Yankees’ field widths (492.9 ft and 446.9 ft, respectively) is very significant." and is separated into the infield (the area nearest to the batter) and the outfield.
The infield is a square (usually called a "diamond"), with each side being  long. In each corner of the square, there is a "base", which is a square with sides of . One of the bases is called home base or home plate, and the sides of the square that touch home plate are extended beyond the two nearest bases until the outfield fence (which is  or more away from home plate) to form the foul lines. Most of what happens in a baseball game happens in the area of the field in between the foul lines and the outfield fence, which is called fair territory. All other areas of the field (except the foul lines) are called foul territory.

 Major League Ballparks
Below is a list of all current ballparks for teams of major league baseball.

StadiumTeam  City  seats  Angel Stadium of Anaheim Los Angeles Angels of Anaheim  Anaheim, California  45,050  AT&T Park San Francisco Giants  San Francisco, California  Busch Stadium St. Louis Cardinals  St. Louis, Missouri  46,861  Chase Field Arizona Diamondbacks  Phoenix, Arizona  49,033 Citi Field New York Mets  Queens, New York City  41,922   Citizens Bank Park Philadelphia Phillies  Philadelphia, Pennsylvania  43,647    401′Comerica Park Detroit Tigers  Detroit, Michigan  41,782  Coors Field Colorado Rockies  Denver, Colorado  50,445  Dodger Stadium Los Angeles Dodgers  Los Angeles, California  56,000 Fenway Park Boston Red Sox  Boston, Massachusetts  39,928 Great American Ball Park Cincinnati Reds  Cincinnati, Ohio 365′325′ 52′Kauffman Stadium Kansas City Royals  Kansas City, Missouri  38,030  Marlins Park Miami Marlins  Miami, Florida  Miller Park Milwaukee Brewers  Milwaukee, Wisconsin  Minute Maid Park Houston Astros  Houston, Texas  40,950 Nationals Park Washington Nationals  Washington, D.C.  41,888 O.co Coliseum Oakland Athletics  Oakland, California  35,067*  Oriole Park at Camden Yards Baltimore Orioles  Baltimore, Maryland  48,876  PETCO Park San Diego Padres  San Diego, California  PNC Park Pittsburgh Pirates  Pittsburgh, Pennsylvania Progressive Field Cleveland Indians  Cleveland, Ohio  43,570 Rangers Ballpark in Arlington Texas Rangers  Arlington, Texas  49,115  Rogers Centre Toronto Blue Jays  Toronto, Ontario  49,539  T-Mobile Park Seattle Mariners  Seattle, Washington  47,116  Target Field Minnesota Twins  Minneapolis, Minnesota  40,000  Tropicana Field Tampa Bay Rays  St. Petersburg, Florida  36,973** Turner Field Atlanta Braves  Atlanta, Georgia  50,096  U.S. Cellular Field Chicago White Sox  Chicago, Illinois  40,615  Wrigley Field Chicago Cubs  Chicago, Illinois  41,118  Yankee Stadium New York Yankees  Bronx, New York City  52,325 

 References 

 Other websites 
Baseball Park facts, figures, photos, and more at Ballparks.com
Satellite and Aerial Photography of American League Stadiums 
Satellite and Aerial Photos of National League Stadiums