28 active down, 2 to go! Miami and Minnesota, plus soon to be new Atlanta
12 retired, including the Marlins and Twins old stadiums, so all teams at home plus Montreal.
Bonus Hanshin Tigers in Japan

Atlanta Braves Turner Field
Baltimore Orioles Camden Yards
Boston Red Sox Fenway Park
Chicago White Sox US Cellular Field
Chicago Cubs Wrigley Field
Cincinnati Reds Great American Ballpark
Cleveland Indians Jacob's Field
Colorado Rockies Coors Field
Detroit Tigers Comerica Park
Houston Astros Minute Maid Park
Kansas City Royals Kaufman Stadium
LA Angels of Anaheim Angel Stadium
Los Angeles Dodgers Dodger Stadium
Milwaukee Brewers Miller Park
New York Mets Citi Field 2009
New York Yankees Yankee Stadium 2009
Oakland Athletics Oakland McAfee Coliseum
Phil Phillies Citizens Bank Ballpark
Pittsburgh Pirates PNC Park
San Diego Padres Petco Park
San Fran Giants Pac Bell/AT&T Park
Seattle Mariners Safeco Field
St Louis Cardinals New Busch Stadium
Tampa Bay Devil Rays Tropicana Field
Texas Rangers The Ballpark at Arlington
Toronto Blue Jays Skydome/Rogers Center
Arizona Dbacks Bank One Ballpark
Washington Nationals Nationals Ballpark
Active totals 28

Retired Stadiums 12
Atlanta Braves Fulton County Stadium
Cincinnati Reds Riverfront Stadium
Detroit Tigers Tiger Stadium
Florida Marlins Joe Robbie Stadium
Montreal Expos Olympic Stadium
Philadelphia Phillies Veterans Stadium
San Diego Padres Jack Murphy Stadium
San Fran Giants Candelstick Park
St Louis Cardinals Busch Stadium
New York Mets Shea Stadium
New York Yankees Yankee Stadium
Minnesota Twins Metrodome