I hate ranked lists, but I'll give it a go. It's as much dependent on the experience you happen to have as what the designers put into it. AT&T Park (SFG) - get upper deck behind home plate and it's tough to beat the viewCamden Yards (BAL) - been years since I visited but it was just a solid experienceTarget Field (MIN) - haven't been there as much as I would like but it's been great (thanks glunn!)O.co Coliseum (OAK) - my controversial pick, but I've never had a bad experience there - Oakland weather in summer is sunny and temperate - Saag's bratwurst is my must-have treat thereRogers Centre (TOR) - now come a sequence of good indoor parksSafeco Field (SEA) - continuingChase Field (ARI) - continuing - I like all the little points of interest as I walk the circuit hereKaufmann Stadium (KC) - I liked it, nothing really memorable nowUS Cellular Field (CHW) - some call it antiseptic, I like the experience better than WrigleyProgressive Field (CLE) - I liked it, nothing really memorable nowAngel Stadium of Anaheim (LAA) - nothing really memorable nowBusch Stadium III (STL) - my one game was seated in RF and couldn't see deep flies, disappointing for a new park billed as state of the art.Fenway Park (BOS) - if you like the smell of urine...Wrigley Field (CHC) - ... try either one of these. The neighborhoods are fun of course, particularly Wrigley, but I have had too many bad experiences at Wrigley games (hot, cramped, no vendors, frigid cold, fans throwing debris on the field when their closer blew it, you name it) and just can not rate it well.Citizens Bank Park (PHI) - oh just soooo blandDodger Stadium (LAD) - my one experience there was with prior ownership - nothing to eat but Dodger Dogs and few concession stands were open to sell even these. I'm sure it's better again but I can only go by what I saw.Miller Park (MIL) - I hate everything about Milwaukee, including this roofed monsterMinute Maid Park (HOU) - the bad roof, plus stupid short LF porch and stupid CF hill, and what I felt certain was artificial crowd noise Three parks no longer standing: Municipal Stadium (CLE) - I had two games there before they tore it down and this gave witness to both the best and worst of the old ballparks - my first game was in the lower deck and the view was obstructed by pillars - my second game was down close in the upper deck and you felt so close to the game you could practically pick up the cap off the on-deck batter if you wanted to.Tiger Stadium (DET) - they had it freshly painted near the end of its life and I enjoyed the visit there even though the experience outside the park was less than stellar.Metrodome (MIN) - I have so many happy memories inside this miserable dump, one that I had to apologize for to out-of-towners, that I truly don't know how to rate it. Best? Worst? Personal rating somewhere in between I suppose. When filled to capacity for a game that mattered it was an experience.