Here's a link to Terraserver, a free site that has most of the aerial photos of the US. You can locate your town, your farm, even your house with a bit of practice. Zoom in, out, move in all four directions. It's a nice little tool for looking at your bee yard and figuring out how far your bees may travel and what they're foraging on.
edit to say that the link is to my little corner of the world, just for an example.