Mule Day is an annual celebration of all things related to mules and is held in Columbia, Tennessee, the "Mule Capital" of the world. Begun in 1840 as "Breeder's Day", a meeting for mule breeders, it now attracts over 200,000 people and takes place over four days. In addition to mules, traditional Appalachian food, music, dancing, and crafts are featured.
We've visited a couple of times to see mules since we didn't know what they were. My kids loved to see the parade, but it's TOTALLY a country thing. After watching the parade, we went to see Mule's day flea market and more mules closely. If you have a weekend nothing to do, it's fun to go and see. Just expect country music and people all around :)