I don't keep records, but I've been fortunate to see MLB games in numerous parks the past couple of years, including Safeco, ATT, Kaufman, Busch, Camden, Nats Park, Fenway, Yankee stadium, Citizens Bank, PNC Park and whatever they call that mausoleum where the ChiSox play (which was a memorable game as I got to see a brawl between KC and Sox in which both starting pitchers were tossed in the 7th of a 2-2 tie, and it went 13 innings on very chilly April night but they kept the beer flowing and so about 2000 or so of us diehards waited, standing and shivering, until we finally saw Hosmer hit the game winning double in the top of the 13th).
For me ATT still rules all with those crab sandwiches on that terrace over looking SF Bay, but I like a lot of the other stadiums, particularly Safeco and PNC park (hard to admit the Pirates have a better stadium than St Louis as a Cards fan, but it is what it is).
I also got a foul ball at Safeco, which doubled my collection!