Professional Baseball Stadiums that I have been to:

Tiger Stadium - Detroit Tigers (1992)
Metrodome - Minnesota Twins (1995)
Fenway Park - Boston Red Sox (1995)
Fulton County Stadium - Atlanta Braves (1996)
Busch Stadium - St. Louis Cardinals (1997)
Astrodome - Houston Astros (1997)
Safeco Field - Seattle Mariners (2000)
Comerica Park - Detroit Tigers (2001)
Wrigley Field - Chicago Cubs (2003)
Petco Park - San Diego Padres (2004)
Angel Stadium - Anaheim Angels (2007)
Nationals Park - Washington Nationals (2009)
Oriole Park at Camden Yards - Baltimore Orioles (2011)