This isn’t baseball-related but I thought I’d pass it on. If you haven’t checked out Google Earth, it’s really worth a look. Google Earth allows you to view any place on the Earth via satellite imagery. Google combines the usual mapping interfacing (i.e directions, nearest businesses etc.) with this and it becomes a useful tool.
Here is a screen shot showing a closeup of Wrigley Field (click for larger image).
You can download the free program from Google Earth’s page. You must have a relatively new computer with the video capabilities to handle the imagery.