Alabama is chicken raising country - the above picture is just two of the many that are less than a mile from my house. They're big giant buildings - I couldn't get far enough away from them to even get the three that sit right together in the same photo.
In the hot summertime there are huge fans blowing in the front openings.
The bottom photo is the "poop barn" - it probably has another name, but that's what it is. When they clean out the barns (with a backhoe, bulldozer, or whatever) they can't just leave it sitting out in the 'open' like they used to. It has to be IN a barn - hence the poop barn. It's actually quite close to the chicken houses - just a little off to the right of the top photo.