Mayfield Dairy has a free tour of their plant in Athens. Outside the plant is a giant black and white and a beautiful mural of cows in a field on the factory side.
The tour is free, fun and educational. You get to see how the milk is brought in and bottled. It is fun to watch the ice cream being made too. At the beginning of the tour there is a short film with the current Mayfield heir explaining the history of the company. It is kind of a commercial but is interesting. You wear hairnets on the tour although most of the time you are behind glass looking in from a hallway. We took pictures of how funny we looked in hairnets. The tour does require a little bit of walking. At the end of the tour you can try some of the the ice cream they offer in a little ice cream parlor. The ice cream isn't free but is reasonably priced. Sometimes they offer flavors you can't get in the stores. There is also a gift shop with Mayfield Dairy souvenirs.
Athens is a charming little Southern town. I recommend this as an unusal out -of- the way excursion.