Tiger, Forbes and Memorial are venues I would have liked to have experienced. Not sure about Candlestick?
Candlestick is great for the history. Not so much for fan comfort. Froze my ass off there on more than one warm summer evening. My biggest thrill was visualizing the Stu Miller hilarity (a blast from my past well before my visits).
Tiger Stadium was my "home park" as a kid. Happy memories from the second deck boxes behind 3B. Eddie Yost, Paul Foytack, Milt Boling, Charlie Maxwell, Rocky Bridges, Hank Aguirre and (of course) Al Kaline. I still remember my horror at the Kuehne/Colovito trade - my earliest lesson in my limitations as an armchair GM.
Forbes was sentimental since my Dad grew up there. Unfortunately, he was not present when I visited. He did take me to see the Pirates in spring training in Fort Myers once though. 62/63?
Picked up Memorial & Camden in successive years on business travel. To me, Camden was a real upgrade in every aspect.
And I agree with whoever pointed out that Wrigley is substandard. Again, the history is nice, but so many blind spots and horrible sight lines!