Comiskey Park – Chicago
Arlington Stadium – Texas
Astrodome – Houston
Fulton County Stadium – Atlanta
Tiger Stadium – Detroit
Kingdom - Seattle
Memorial Stadium - Baltimore
I just checked and the first stadium I ever went to, Oakland Coliseum in 1968, is still around ... surprisingly.
I've only been to 2 major league games since 1994 (yeah, I'm still boycotting because of the strike - I'll have them on their knees soon
) and they were both in Houston. Tickets were given to me.