Here's a fun game. Lets see how keen your eye is when looking at aerial photography. The following list are links to images of ballparks that have(had) housed a MLB franchise. I don't think any of them are too hard. And there are a handful that are fairly easy given some not-so-subtle hints in the image (see Ballpark 2). But lets see how well you do. I'll keep track of who was the first person to answer each one correctly.
EDIT: All have been answered correctly now. If you want to play by yourself feel free. The correct answers are posted at the top of Page 3