My Ballpark Rankings

The current number of stadiums where I have seen Major League games is 44 including all of the 30 currently active stadiums.

Current National League Stadiums	Current American League Stadiums
AT&T Park	Angels Stadium
Busch Stadium (3)	Ballpark at Arlington
Chase Field	Oriole Park at Camden Yards
Citizen’s Bank Park	Comerica Park
Citi Field	Fenway Park
Coors Field	Progressive Field
Dodger Stadium	Kauffman Stadium
Great American Ballpark	Minute Maid Park
Marlins Park	O.co Coliseum
Miller Park	Rogers Centre
Nationals Park	Safeco Field
PETCO Park	Target Field
PNC Park	Tropicana Field
SunTrust Park	U.S. Cellular Field
Wrigley Field	Yankee Stadium (2)

 

Former Major League Stadiums

3COM Park

Busch Stadium (2)

Cinergy Field

Hubert H. Humphrey Metrodome

Memorial Stadium

Olympic Stadium

Qualcomm Stadium

RFK Stadium

Shea Stadium

Sun Life Stadium

Three Rivers Stadium

Turner Field

Veterans Stadium

Yankee Stadium (1)